Adding and Subtracting Decimals

Adding Decimals

100

.4 + .5 = ?

.9 

200

.74 + .4 = ? 

1.14 

300

1.05 + .25 = ? 

1.3 

400

6.782 + 4.395 = ? 

11.177

500

52.214 + 34.423 = ? 

ESTIMATE TOO! 

Answer:  86.637 

Estimate: 52+34=86

Subtracting Decimals

100

0.8 - 0.3 = ? 

.5 

200

4.5 - 2.3 = ? 

2.2 

300

5.3 - 3.86 = ? 

1.44 

400

8 - 6.99 = ? 

1.01 

500

132.43 - 88.14 = ? 

44.29 

Word Problems

100

Nina buys an apple for $.58 and an orange for $.74. How much does she pay for the fruit? 

$1.32 

200

KJ walks 2.54 km to the park and then walks 1.7 km to the store. What is the total distance he walks? 

4.23 km 

300

Ruby goes on a 4.5 mile hike. After 1 hour, the trail tells Ruby she hiked 3.14 miles. How much farther does she have to hike? 

1.36 miles 

400

Chemere went shopping for school supplies. A binder costs $2.68. A book costs $5. How much MORE does a book cost than a binder? 

$2.32 

500

Anely wants to buy a new coat! The coat costs $89.95 BUT Anely has a coupon that takes off $10.50 of the original price. How much will the coat costs if Anely uses her coupon? 

$79.45

Saying Decimals

100

Please say .3 

3 tenths 

200

Please say .45 

45 hundredths 

300

Please say .532

five hundred thirty two thousandths 

400

Please sat 204.32

two hundred and four AND thirty two hundredths 

500

Please say 89,052.444

eighty nine thousand fifty two and four hundred forty four thousandths 

REVIEW

100

3/5 x 3/4 = ? 

9/20 

200

2/6 x 4/8 = ? 

8/48

300

Compare (greater than, less than, equal) 

 76.924             76.931 

76.924       <      76.931

400

.4 x 10 = ? 

4 

500

.04 x 1/10 = ? 

.004