Compare & Order Decimals
Place Value of Decimals
Adding decimals
Subtracting Decimals
Rounding & Estimating Decimals
100

Compare. Use <, >, or =.

8.72 O 8.720

=

100

What is the value of the underlined digit?

0.781

0.08 or 8 hundredths or 8 x 1/100

100

Add.

4.35 + 2.009 =

6.359

100

Subtract.

5.83 - 2.18 =

3.65

100

True or False.

Rafael bought 2.15 pounds of potato salad and 4.2 pounds of macaroni salad to bring to a picnic. 

Rounded to the nearest tenth, Rafael bought 2.1 pounds of potato salad.

False. Rafael bought 2.2 pounds of potato salad.

200

Compare. Use <, >, or =.

6.76 O 6.759

>

200

What is the value of the underlined digit?

1.345

0.005 or 5 thousandths or 5 x 1/1,000

200

Add.

0.031 + 1.104 =

1.135

200

Subtract.

13.2 - 8.04 =

5.16

200

True or False.

Rafael bought 2.15 pounds of potato salad and 4.2 pounds of macaroni salad to bring to a picnic. 

Rounded to the nearest whole number, Rafael bought 2 pounds of potato salad and 4 pounds of macaroni salad.

True

300

Order from least to greatest.

4.754 ;  4.752 ;  5.19  ;  5.75

4.752
4.754
5.19
5.75

300

What is 10 times as much as 0.3?

3.0

300

Add.

13.05 + 0.89 =

13.94

300

Subtract.

34.27 - 17.51 = 

16.76

300

Michelle records the value of one euro in U.S. dollars each day for her social studies project. The table shows the data she has recorded so far. 

Day       Value of 1 Euro (in U.S. dollars) 

Monday         1.448 

Tuesday         1.443 

Wednesday    1.452 

Thursday       1.458 

On which two days was the value of 1 euro the same when rounded to the nearest hundredth of a dollar?

Monday and Wednesday

400

The four highest scores on the floor exercise at a gymnastics meet were 9.675, 9.25, 9.325, and 9.5 points.

Which of these scores is the lowest?

9.25

400

0.08 is ten times greater than

0.008

400

Ben rode his bicycle 3.6 miles on Saturday and 4.85 miles on Sunday. How many miles did he ride Saturday and Sunday combined?

8.45 miles

400

Miguel has $20. He spends $7.25 on a movie ticket, $3.95 for snacks, and $1.75 for bus fare each way. How much money does Miguel have left?

$5.30

400

A vet measured the mass of two birds. The mass of the robin was 76.64 grams. The mass of the blue jay was 81.54 grams. Estimate the difference in the masses of the birds.

82 - 77 = 5 grams

500

The four highest scores on the floor exercise at a gymnastics meet were 9.675, 9.25, 9.325, and 9.5 points.

Which of these scores is the highest?

9.675

500

0.001 is 1/10 of

0.01

500

Yolanda's sunflower plant was 64.34 centimeters tall in July. During August, the plant grew 18.2 centimeters. What was the exact height of the plant at the end of August?

82.54 cm

500

Oscar ran the 100-yard dash in 12.41 seconds. Jesiah ran the 100-yard dash in 11.85 seconds. How many seconds faster was Jesiah’s time than Oscar’s time?

0.56 second 

500

Yolanda's sunflower plant was 64.34 centimeters tall in July. During August, the plant grew 18.2 centimeters. Estimate the height of Yolanda's plant at the end of August by rounding each value to the nearest whole number. 

64 cm + 18 cm = 82 cm