Name________________________

ADDING DECIMALS #5--KEY

Directions: Find the sum of the following decimals by rewriting the problem with your decimal points lined up. If necessary, use zeroes to hold your place values.

Examples: 0.25 + 0.1 becomes 0.25 and 3.2 + 0.125 becomes 3.200

+ 0.10 + 0.125

0.35 3.325

Original Problem Rewritten Problem Original Problem Rewritten Problem

1) 0.35 + 0.4 0.35 2) 3.710 + 1.2 3.710

+ 0.40 + 1.200

0.75 4.910

3) 5.05 + 0.4 5.05 4) 6.111 + 3.1 6.111

+ 0.40 + 3.100

5.45 9.211

5) 0.7+ 2.12 0.70 6) 8.5 + 1.42 8.50

+ 2.12 + 1.42

2.82 9.92

7) 6 + 0.82 6.00 8) 0.717 + 2.2 0.717

+ 0.82 + 2.200

6.82 2.917

9) 5.5 + 2.3 5.5 10) 8.4 + 0.222 8.400

+ 2.3 + 0.222

7.8 8.622

11) 3.1 + 3.100 3.100 12) 0.004 + 5.6 0.004

+ 3.100 + 5.600

6.200 5.604