Unit 2 Review

Add/Subtract Decimals

100

0.25+1.37=?

1.62

200

3.78-2.45=?

1.33

300

10.773+6.28=?

17.053

400

23.68-9.793=?

13.887

500

Julian weighed his bag of marbles and it weighed 3.57 grams. He weighed another bag of his marbles at 5.38 grams. What is the total weight of both bags of marbles?

8.95 grams

Add/Subtract Fractions

100

1/2+4/5=?

13/10

200

5/8-2/3=?

9/24

300

9/10+4/6=?

47/30

400

18/20-3/4=?

3/20

500

Whitney needed ribbon to make bows for her friends. She already has 3/10 inches of ribbon but needs 5/8 inches of ribbon. How much more ribbon does she need?

13/40 inches of ribbon

Powers of 10

100

10^3=?

1,000

200

10x10x10x10=?

10^4 or 10,000

300

5x10^2=?

500

400

0.6x10^3=?

600

500

0.8x_=8

10

Rounding/Comparing Decimals

100

Round to the nearest tenth: 0.63

0.60

200

Which sign? <, >, =

0.12 _ 0.012

0.12 > 0.012

300

Round to the nearest hundredth: 1.378

1.380

400

Round to the nearest whole number: 24.34

24

500

Which sign? <, >, =

1.2 _ 1.20

1.2 = 1.20

Decimal Expressions

100

What decimal is 1/10?

0.1

200

What is 8 x 1/10?

0.8

300

What is 5 x 1/100?

0.05

400

3 x 1/10 + 6x1/100=?

0.36

500

5x10 + 2x1 + 6x1/10=?

52.6