Mental Math Review

What is 10 less than 67?

What is 100 more than 578?

What is the doubles fact for 18?

• 9+9

• 8+8

• 10+10

• 6+6

What is the doubles fact for 14?

• 6+6

• 7+7

• 10+4

• 4+4

What is the missing number?

______ + 432 = 532

• 10

• 50

• 100

• 200

What is the missing number?

_______ - 10 = 782

• 792

• 892

• 772

• 682

Fill in the missing number:

________ + 100 = 628

Fill in the missing number:

_______ - 10 = 445

Choose ALL the doubles facts.

• 10+10 = 20

• 5+6 = 11

• 4+4=8

• 6+6=12

Use the doubles plus two strategy to solve:

6+8= ______