General mathematics

Grades

2nd grade

Students deepen their skills in addition and subtraction and become familiar with multiplication and division. Moreover, they study relationships between numbers and develop basic knowledge of managing money and time.

307 skills

- Adding a one-digit number to a two-digit number without regrouping
  
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- Adding a one-digit number to a two-digit number with regrouping
  
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- Adding a two-digit number by making a round number
  
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- Adding up to a round number
  
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- Adding by tens and ones
  
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- Adding two-digit numbers without regrouping
  
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- Adding two-digit numbers in column form
  
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- Adding two-digit numbers with regrouping
  
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- Adding two-digit numbers
  
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- Adding a two-digit number by breaking it into parts
  
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- Adding two-digit numbers: problem solving
  
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- Finding the sum
  
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- Finding the missing number in an addition equation
  
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- Balancing an addition equation
  
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- Writing an addition expression based on a word problem
  
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- Adding two-digit numbers in column form across 100
  
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- Adding two-digit numbers across 100
  
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- Adding more than two two-digit numbers in column form
  
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- Adding more than two two-digit numbers
  
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- Adding more than two two-digit numbers: problem solving
  
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- Commutative property of addition
  
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- Associative property of addition
  
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- Properties of adding two-digit numbers: problem solving
  
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- Checkpoints
  
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- Subtracting two-digit numbers by making a round number
  
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- Subtracting two-digit numbers in column form
  
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- Finding the difference
  
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- Subtracting from a round number
  
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- Subtracting a two-digit number by completing to a round number
  
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- Subtracting a sum from a number
  
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- Subtracting a number from a sum
  
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- Subtracting with regrouping
  
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- Finding the missing number in a subtraction equation
  
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- Balancing a subtraction equation
  
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- Writing a subtraction expression based on a word problem
  
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- Subtracting two-digit numbers: problem solving
  
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- Properties of subtracting two-digit numbers: problem solving
  
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- Checkpoints
  
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- Adding and subtracting two-digit numbers
  
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- Adding and subtracting two-digit numbers in column form
  
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- Inserting + or − signs in empty spaces
  
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- Choosing the correct answer
  
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- Relationship between addition and subtraction
  
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- Finding the missing number in addition and subtraction equations
  
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- Balancing addition and subtraction equations
  
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- Choosing the correct equation
  
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- Writing addition and subtraction equations
  
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- Equalities and inequalities
  
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- Solving problems using models
  
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- Solving addition and subtraction problems
  
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- Identifying the word problem condition that matches an equation
  
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- Solving two-step problems
  
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- Checkpoints
  
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- Writing numbers up to 20 in words
  
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- Naming two-digit numbers
  
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- Writing two-digit numbers
  
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- Naming three-digit numbers
  
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- Writing three-digit numbers
  
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- Checkpoints
  
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- Counting using a number line
  
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- Counting forward
  
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- Counting backward
  
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- Skip-counting sequences
  
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- Counting forward and backward by 5s and 10s
  
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- Counting forward and backward by 2s, 5s, and 10s
  
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- Skip-counting puzzles
  
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- Counting forward by tens
  
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- Counting forward by 5s, 10s, and 100s
  
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- Counting forward and backward by 5s, 10s, and 100s
  
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- Counting forward and backward by 2s, 5s, 10s, and 100s
  
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- Checkpoints
  
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- Comparing numbers using a number line
  
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- Ordering numbers using a number line
  
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- Ordering numbers
  
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- Comparing three-digit numbers
  
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- Comparing numbers using words
  
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- Comparing expressions
  
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- Comparing sums
  
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- Checkpoints
  
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- Building three-digit numbers using models
  
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- Identifying the digit in the hundreds, tens, and ones place
  
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- Value of a digit in the tens and ones place
  
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- Value of a digit in the hundreds, tens, and ones place
  
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- Breaking a number into tens and ones
  
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- Grouping tens and ones into tens
  
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- Breaking a three-digit number into place values
  
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- Ones and hundreds
  
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- Ones, tens, and hundreds
  
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- Writing a three-digit number as a sum of place values
  
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- Finding a number
  
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- Calculating with hundreds
  
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- Checkpoints
  
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- Adding three-digit numbers using a number line
  
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- Adding a three-digit number by breaking it into parts
  
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- Adding three-digit numbers without regrouping using models
  
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- Adding three-digit numbers with regrouping using models
  
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- Adding three-digit numbers without regrouping in expanded form
  
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- Adding three-digit numbers with regrouping in expanded form
  
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- Adding three-digit numbers in expanded form
  
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- Adding round two-digit numbers to a three-digit number
  
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- Adding round three-digit numbers to a three-digit number
  
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- Adding round two-digit or three-digit numbers to a three-digit number
  
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- Adding three-digit numbers without regrouping
  
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- Adding three-digit numbers with regrouping
  
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- Adding three-digit numbers in column form
  
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- Adding three-digit numbers
  
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- Adding three-digit numbers: problem solving
  
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- Filling empty boxes
  
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- Finding the missing number in an addition equation
  
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- Balancing an addition equation
  
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- Checkpoints
  
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- Subtracting three-digit numbers using a number line
  
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- Subtracting a three-digit number by breaking it into parts
  
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- Subtracting three-digit numbers without regrouping using models
  
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- Subtracting three-digit numbers with regrouping using models
  
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- Subtracting three-digit numbers without regrouping in expanded form
  
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- Subtracting three-digit numbers with regrouping in expanded form
  
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- Subtracting three-digit numbers in expanded form
  
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- Checkpoints
  
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- Subtracting round two-digit numbers from a three-digit number
  
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- Subtracting round three-digit numbers from a three-digit number
  
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- Subtracting round two-digit or three-digit numbers from a three-digit number
  
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- Subtracting three-digit numbers without regrouping
  
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- Subtracting across zeros
  
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- Subtracting three-digit numbers in column form
  
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- Subtracting three-digit numbers with regrouping
  
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- Subtracting three-digit numbers
  
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- Subtracting three-digit numbers: problem solving
  
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- Finding the missing number in a subtraction equation
  
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- Balancing a subtraction equation
  
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- Checkpoints
  
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- Adding and subtracting three-digit numbers by breaking into parts
  
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- Adding and subtracting three-digit numbers in column form
  
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- Adding and subtracting three-digit numbers
  
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- Adding and subtracting three-digit numbers: problem solving
  
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- Adding several numbers in column form
  
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- Adding and subtracting three-digit numbers: solving inequalities
  
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- Addition operation
  
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- Subtraction operation
  
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- Numerical expression without parentheses
  
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- Numerical expression with parentheses
  
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- Algebraic expressions
  
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- Performing operations
  
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- Solving problems
  
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- Counting in groups
  
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- Representing as a sum
  
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- Calculating the sum
  
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- Completing the sum
  
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- Calculations in sum form: problem solving
  
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- Creating problems involving calculations in sum form
  
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- Checkpoints
  
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- One-step equations
  
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- Two-step equations
  
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- Determining whether the number of shapes is even or odd
  
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- Identifying even and odd numbers
  
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- Identifying even and odd numbers on a number line
  
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- Choosing even and odd numbers
  
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- Sequence of even and odd numbers
  
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- Identifying group-counting expressions
  
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- Writing group-counting expressions
  
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- Counting equal groups
  
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- Identifying multiplication expressions
  
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- Writing multiplication expressions
  
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- Identifying the relationship between addition and multiplication using groups
  
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- Multiplying by 0 or 1 using equal groups
  
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- Identifying multiplication expressions using a table
  
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- Writing multiplication expressions using a table
  
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- Identifying the relationship between addition and multiplication
  
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- Completing sentences using multiplication expressions
  
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- Concept of multiplication
  
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- Checkpoints
  
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- Components of multiplication
  
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- Multiplying one-digit numbers by 1
  
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- Multiplying multi-digit numbers by 1
  
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- Multiplying by 2 and multiplying 2
  
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- Multiplying by 3 and multiplying 3
  
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- Multiplying by 4 and multiplying 4
  
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- Multiplying by 5 and multiplying 5
  
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- Increasing several times
  
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- Multiplying by 6 and multiplying 6
  
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- Multiplying by 7 and multiplying 7
  
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- Multiplying by 8 and multiplying 8
  
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- Multiplying by 9 and multiplying 9
  
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- Checkpoints
  
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