Prime Math - Mental Addition & Subtraction

Select the pairs of numbers that make 1000.

• 700 and 200

• 100 and 900

• 600 and 400

• 100 and 0

Select the addition sentence that matches the number bond.

• 200 + 1000 = 800

• 200 + 600 = 800

• 200 + 800 = 1000

• 800 + 1000 = 1800

What is the missing number?

___ + 300 = 1000

What is the missing number?

1000 - ___ = 500

What is the missing number?

700 - 300 = ___

Complete the pair of numbers that make 100.

65 and ___ make 100

Complete the pair of numbers that make 100.

52 and ___ make 100

Complete the pair of numbers that make 100.

61 and ___ make 100

Complete the pair of numbers that make 100.

32 and ___ make 100

74 and 26 make 100.

Select the addition and/or subtraction

sentences that matches the number pair.

• 100 + 74 = 174

• 100 - 26 = 74

• 26 + 74 = 100

• 74 - 26 = 48