DECIMALS

Adding decimals

100

12 + 8.34

20.34

200

23.1 + 4.042

27.142

300

7.395 + 8.46

15.855

400

3.841 + 0.933 + 5.5

10.274

500

8.466 + 3.4583 + 6.07

17.9943

Subtracting decimals

100

0.4 - 0.39

0.01

200

7.7 - 5.05

2.65

300

6.198 - 4.28

1.918

400

58.35 - 46.37

11.98

500

38.46 - 26.478

11.982

Rounding decimals

100

Round 2.32 to the nearest tenth

2.3

200

Round 12.532 to the nearest one

13

300

Round 634.4673 to the nearest thousandth

634.467

400

Round 57.98 to the nearest tenth

58

500

Maria wanted to round 567.696 to the nearest hundredth. Her answer was 567.71. Is she right?

No

Powers of 10

100

2.64 x 100

264

200

45.578 x 1/1000

0.045578

300

54.483 x 100000

5448300

400

47.389 x 10³

47389

500

849.3832 x 10⁵

84938320

Comparing decimals

100

Compare 1.5 and 0.6

1.5 is larger

200

Compare 5.37900 and 5.379

They are equal

300

Compare 3.970 and 3.96

3.970 is larger

400

Compare 5.0356 and 5.043

5.43 is larger

500

Compare 84.3834 and 84.3832

84.3834 is larger