How it works
Line the points up in a column. Zeros fill the gaps.
Then add or take away, place by place.
Write the point straight down in the answer.
Worked examples
Take away
- 7.4 − 0.3 = ?
- Line up 7.4 and 0.3.
- 4 tenths − 3 tenths = 1 tenth, so 7.1.
- So the answer is 7.1.
Add a whole number
- 1.08 + 3 = ?
- Write 3 as 3.00.
- 1.08 + 3.00 = 4.08.
- So the answer is 4.08.
From a whole number
- 40 − 2.46 = ?
- Write 40 as 40.00.
- 40.00 − 2.46 = 37.54.
- So the answer is 37.54.
A taste of the worksheet
These are the first problems of set A. The printable sheet has many more, with an answer key.
- 2.5 − 0.6 = __
- 9.97 − 2.43 = __
- 0.04 + 2.93 = __
- 3.8 − 0.7 = __
- 8.7 − 6.5 = __
Words to know
- decimal point
- The dot between ones and tenths.
- place
- Where a digit sits.
Watch out for
- Line up the points, not the last digits.