7th Grade- Chapter 1 - Part 1 - Review

Estimating

100

4.12 + 4.76

4 + 5 = 9

200

326.17 - 52 = 

326 - 52 = 274

300

214.6 x 9.8 = 

215 x 10 = 2150

400

4,882(23) = 

5,000(20) = 100,000

500

55.3 / 8.69

54/9 = 6

Adding Decimals

100

12.7 + 4.2 = 

16.9 

200

0.75 + 3.125=

3.875

300

3.63 + 2.5 = 

6.13

400

12 + 4.24=

16.24

500

0.7 + 1.35 + 16 =

18.05

Subtracting Decimals

100

89.9 - 46.78 = 

43.12

200

26.7 - 14.81 =

11.89

300

18.7 - 8.14 = 

10.56

400

21 - 14.455

6.545

500

8.13 - 2.716 - 2.45 =

2.964

Multiplying Decimals

100

2.2 x 4.1 = 

9.02

200

3.68 x 5.8 = 

21.344

300

2.8 x 0.05 =

0.140

400

9.3 x 0.56 =

5.208

500

7.63 x 0.03 =

0.2289

Dividing Decimals

100

4.28 / 2 = 

2.14

200

2.064 / 0.24 = 

8.6

300

84 / 1.5 = 

56

400

10.54 / 0.17 = 

62

500

364.20 / 12 = 

30.35