Topic 2 - Adding and Subtracting Decimals

Front

What is the result of 20.1 - 5.2?

Back

14.9

Front

Estimate the result of 9.22 - 3.88.

Back

5

Front

What is 28.4 - 4.0?

Back

24.4

Front

What is the sum of 5.66 + 4.25?

Back

9.91

Front

What is 659.04 + 1?

Back

660.04

Front

What does it mean to estimate in subtraction?

Back

To find a rough answer that is close to the exact answer, often by rounding numbers.

Front

How do you align decimals when adding or subtracting?

Back

Write the numbers one under the other, aligning the decimal points.

Front

What is the first step in adding decimals?

Back

Align the decimal points and add from right to left.

Front

What is the first step in subtracting decimals?

Back

Align the decimal points and subtract from right to left.

Front

What is the value of 0.5 + 0.25?

Back

0.75