Decimal Operations - 7th Grade

Addition

100

9.2 + (-2.8)

What is 6.4?

200

-12.5 + 15.3

What is 2.8?

300

-8.15 + (-4.3)

What is -12.45?

400

0.65 + (-2.75)

What is -2.1?

500

-20.25 + (-15.711)

4.539

Subtraction

100

-8.4 - 6.7

What is -15.1?

200

12.8 - 21.6

What is -8.8?

300

-20.5 - (-20.5)

What is 0?

400

0.41 - (0.07)

What is 0.48?

500

6.59 + (-7.8) - (-2.41)

What is 1.2?

Multiplication

100

-2.5 x 3.6

What is -9?

200

0.4 x (-0.03)

What is -0.012?

300

-0.05(-0.5)

What is 0.025?

400

-1.39 x (-6.8)

What is 9.452?

500

-8(0.09)(-0.5)

What is 0.36?

Division

100

-3.45/ (-15)

What is 0.23?

200

0.18/0.03

What is -6?

300

8.722/(-3.56)

What is -2.45

400

12.42/(-4.8)

What is -2.5875?

500

32.436/(-4.24)

What is -7.65?

Changing Fraction to Decimals

100

7/40

What is 0.175?

200

-1/9

What is -0.1 (repeating)?

300

-21/16

What is-1.3125?

400

36/5

What is 7.2?

500

Write the decimal as a fraction in simplest form. -4.45

What is -4 9/20?