Decimals and Equations

Rounding

100

771; hundreds

800

200

48.871; ones

49

300

29.7858; hundredths

29.79

400

4.46658; thousandths

4.467

500

1.9583; tenths

2.0

Adding

100

1.6 + 0.3

1.9

200

4.4 + 5.6

10

300

3.56 + 6.3

9.86

400

1.8 + 3.42

5.22

500

1.557 + 4.8

6.357

Subtraction

100

7.8 - 3.1

4.7

200

6 - 5.6

0.4

300

7.16 - 6.1

1.06

400

8 - 4.04

3.96

500

5.5 - 4.87

0.63

Two Step Equations

100

6x + 3 = 15

x = 2

200

-4 - 2n = -6

n = 1

300

-26 = -8a + 6

a = 4

400

n/2 + 7 = 12

n = 10

500

3 = r/16 + 4

r = -16

Multi-Step Equations

100

-3v + 5 = 1 - 4v

v = -4

200

-7 + 4x = 1 + 6x

x = -4

300

1 - 3p = -5p + 11

p = 5

400

n - 6 = -6 + 2n

n = 0

500

5x + 14 = 14 + 5x

No solution