Addition and subtraction

Adding & subtracting decimals

Name: ______________________________Date: ______________Score: ______ / 20

1.
28.2 + 13.4 = ?
2.
12.46 + 1.31 = ?
3.
9.75 + 13.42 = ?
4.
123.1 − 47.3 = ?
5.
34.29 − 7.41 = ?
6.
13.41 + 4.39 = ?
7.
Fatima has $7.25. She is given $15.50. How many dollars does she have now?
$
8.
A sunflower is 3.9 m tall. Ten days later it is 5.1 m tall. How many metres did it grow?
m
9.
What is the difference between 54.31 and 46.76?
10.
What is a good first step before adding or subtracting decimals?
1. AEstimate the answer first
2. BMultiply the two numbers
3. CRound both to the nearest hundred
4. DRemove the decimal points
11.
28.2 + 13.4 = 41.6.
True False
12.
9.75 + 13.42 = 22.17.
True False
13.
30.6 − 15.9 = ?
14.
21.34 + 57.84 = ?
15.
114.53 − 35.27 = ?
16.
94.5 − 18.6 = ?
17.
125.67 + 86.39 = ?
18.
30.8 − 15 = ?
19.
69.7 + 43.5 = ?
20.
111.22 − 17.48 = ?

Answer key

Addition and subtraction — Adding & subtracting decimals