What math do you remember?

Mental Math

100

20 + 10 = 

30

200

85 - 10 = 

75

300

240 + 100 = 

340

400

43 + 9 =

52

500

66 + 9 =

75

Addition/Subtraction

100

  25

₊67

92

200

  198

-  40

158

300

   62

- 39

23

400

   526

+198

724

500

  713

-286

427

Place Value

100

567: Which number is in the tens place?

6

200

823: What place value is the 8 in?

the hundreds place

300

Without writing it, what is 400 + 60 + 8?

468

400

What is the place value addition problem for the number 52?

50 + 2

500

What is the place value addition fact for 591?

500 + 90 + 1

Multiplication

100

Count by 2s up to 20

2 4 6 8 10 12 14 16 18 20

200

Count by 5s up to 50.

5 10 15 20 25 30 35 40 45 50

300

Count by 9s up to 90

9 18 27 36 45 54 63 72 81 90

400

Count by 4s up to 40

4 8 12 16 20 24 28 32 36 40

500

Count by 25s up to 200

25 50 75 100 125 150 175 200

Number Families

100

5 + __ = 13

8

200

___ + 10 = 48

38

300

___ - 5 = 31

36

400

88 - ___ = 40

48

500

___ - 62 = 59

121