Decimal Review

Adding Decimals

100

Add the decimals:   

8.16  +  9.1

17.26

200

Add the decimals:  

2.8  +  0.13

2.93

300

Add the decimals: 

0.041 + 9.3

9.341

400

Add the decimals:  

3.546 + 8.514

12.06

500

Add the decimals: 

7.290 + 6.586

13.876

Subtracting Decimals

100

Subtract the decimals:   

8.5 - 7.4

1.1

200

Subtract the decimals:  

19.8 - 2.6

17.2

300

Subtract the decimals:  

5.80 - 3.76

2.04

400

Subtract the decimals:

0.76 - 0.068

0.692

500

In October, 87,234 tickets were sold to a school's football games. In December, 196,049 tickets were sold. How many more tickets were sold in December than in October? 

108,815 tickets

Rounding Decimals

100

Round to the nearest hundredth: 

45.921

45.92

200

Round to the nearest thousand: 

4,521.024

5,000

300

Round to the nearest tenth:

24.599

24.6

400

Round to the nearest whole number: 

51.89

52

500

Round to the nearest thousandth: 

412.41214

412.412

Estimating

100

Estimate to the nearest thousand: 

14,189 + 12,834

27,000

200

Estimate to the nearest whole number: 

89.923 + 9.929

100

300

Estimate to the nearest ten: 

48.1 + 18.2

70

400

Estimate to the nearest whole number: 

1.022 + 2.891

4

500

Estimate to the nearest hundred: 

2,191 + 3,491

5,700

Surprise!

100

Name a number between 0.58 and 0.59 in word form. 

Answers may vary. 

200

Name a number that rounds to 2.45 in word form. 

Answers may vary. 

300

Ms. Raj awarded 6.7 points to Zander, 6.07 points to Celine, and 6.677 points to Tiam. How many points did they earn in total? 

19.447 points. 

400

Fifth grade held a car wash to raise money for charity. They earned $83.40 on Saturday and $54.75 on Sunday. How much did they earn during the entire weekend? 

$138.15

500

Estimate the answer to the nearest hundred. 

1,382 - 415 = 

1,000