Math

Addition

100

9 + 9

What is 18

200

36 + 22

What is 58

300

69 + 87

What is 156

400

123 + 68

What is 191

500

1,345 + 221

What is 1,566

Subtraction

100

17 - 9

What is 8

200

43 - 16

What is 27

300

99 - 62

What is 37

400

100 - 32

What is 68

500

1,000 - 356

What is 644

Multiplication

100

3 x 3

What is 9

200

4 x 6

What is 24

300

9 x 8

What is 72

400

13 x 5

What is 65

500

17 x 9

What is 153

Multiplying by powers of ten

100

3 x 10

What is 30?

200

15 x 10

What is 150?

300

23 x 10

What is 230?

400

56 x 100

What is 5600?

500

32 x 1000

What is 32000

Addition and Subtraction with rounding

100

21 + 21

What is 42

200

67 + 81

What is 148?

300

99 + 100 + 99 + 100 + 99

What is 497?

400

1999 + 2001 + 1999 + 2001

8000

500

13 + 23 + 33 + 43 + 17 + 27 + 37 + 47 + 100

What is 340?