Board 2

Mental Math

100

3 + 10 ÷ 2

8

200

3 + 20 - 5³

-101

300

50 ÷ 5 + 7

17

400

20 + 20 + 30 ÷ (2³ + 2)

43

500

10 ÷ 5 + 2 - 5 + 3 × 6 - 20

-3

Fractions

100

(2/5) × (3/7)

6/35

200

(2/3) + (1/5)

13/15

300

(1/5) + (1/5) - (1/5)

1/5

400

(2/3) + (1/7) - (1/5) + (2/7)

94/105

500

(2/3) × (2/5) × (2/5) ÷ (6/5) ÷ (7/9)

4/35

Decimals

100

1.0 + 3.1

4.1

200

10.00 + 10.29

20.29

300

909.09 + 101.01

1010.1

400

7.01 × 1.2

8.412

500

2.0 ÷ 0.05 + 3.0

43

Exponents

100

3²

9

200

7²

49

300

12²

144

400

8⁴

4096

500

2¹⁰

1024

PEMDAS

100

7 + 3 ÷ 1 + 8 × 2

26

200

8² - (3 + 15 ÷ 3)

56

300

3 + 6 - (2 + 10 ÷ 10) ÷ 3

2

400

[3 + (10 ÷ 5) - 2] + 3 ÷ (2 + 1)

4

500

2 + 3 × [ 5 - 1 × (2 ÷ 1 + 3) + 6] + 15 × 3 ÷ (1 + 2 ÷ 1)

35