Add Many
About this exercise
Adding three or more numbers in one go.
Example problems
A few of the problems this exercise asks. The printable worksheet holds ten fresh ones.
- 14 + 9 + 10 + 12 = ?
- 13 + 7 + 11 + 6 = ?
- 15 + 3 + 14 = ?
- 4 + 11 + 9 = ?
Try it yourself first — open a section below only if you get stuck.
How to solve it
Order does not matter when adding, so look for pairs that make ten or another round number and add those first.
Worked example
In 2 + 7 + 10 the seven and the two make nine, and adding ten gives 19.
Common mistake
Grinding strictly from left to right. Rearranging into friendly pairs first turns a long sum into a short one.