Name:    Lesson 5: Adding Decimals by Regrouping

1.

Tai used this place value chart to add the decimals 1.365 and 0.227.

 Ones . Tenths Hundredths Thousandths

Calculate the sum by regrouping.
 a. 1.582 b. 1.692 c. 1.592 d. 1.602

2.

This table shows the masses of flyers and newspapers received in two weeks.Use the table to answer the following 3 questions.

 Week 1 Week 2 Flyers (kg) 2.318 1.704 Newspapers (kg) 1.547 2.278

Calculate the total mass of flyers for the two weeks using regrouping.
 a. 4.022 kg b. 4.122 kg c. 4.012 kg d. 4.112 kg

3.

Calculate the total mass of newspapers for the two weeks by regrouping.
 a. 3.715 kg b. 3.725 kg c. 3.925 kg d. 3.825 kg

4.

Calculate the total mass of flyers and newspapers received in Week 1 by regrouping.
 a. 3.765 kg b. 3.865 kg c. 3.745 kg d. 3.876 kg

5.

Calculate the total mass of flyers and newspapers received in Week 2 by regrouping.
 a. 3.972 kg b. 3.862 kg c. 3.982 kg d. 3.983 kg

6.

One package of cheese has a mass of 0.345 kg. Another package of cheese has a mass of 0.609 kg. Use regrouping to calculate the total mass of cheese.
 a. 0.944 kg b. 0.954 kg c. 1.095 kg d. 0.854 kg

7.

Calculate the sum.
4.36 + 1.27
 a. 5.63 b. 5.53 c. 6.63 d. 5.73

8.

Calculate the sum.
1.385 + 2.418 + 1.047
 a. 4.73 b. 4.75 c. 4.785 d. 4.85

9.

Calculate the sum.
0.48 + 3.65
 a. 0.413 b. 4.13 c. 41.3 d. 413

10.

Calculate the sum.
2.019 + 3.257 + 1.903
 a. 71.79 b. 7179 c. 7.179 d. 717.9