Decimals Revision Quiz

Addition

Subtraction

Rounding to the nearest unit

0.1 + 0.7 = __
0.5 + 0.9 = __
1.9 + 5/10 = __
3.6 + 9/10 = __
8.9 + 6.4 = __
17.6 + 9 4/10 = __
31.6 + 19.3 = __
12.7 + 72.1 = __
19.6 + 18.4 = __
57 1/10 + 29 9/10 = __

0.5 - 0.2 = __
0.9 - 0.5 = __
1.2 - 0.6 = __
4.7 - 3.1 = __
5.4 - 3.2 = __
12.7 - 9.8 = __
31.6 - 10.9 = __
54.0 - 17.5 = __
92.1 - 15 6/10 = __
25 7/10 - 12 8/10 = __

6.3
9.4
9.9
0.6
12.3
31.7
57.6
91.2
84.5
97.0

Answer these questions...

I have one unit and seven tenths. Write this number in decimals.

What is nine units and five tenths in decimals?

Why do we write the decimal point in the number 6.4?

How many tens, units and tenths are there in 75.6?

Why do we write the zero in 0.2?