Addition within 20

Practice Practice sheet New questions

The question

8 + 4

8+4

8+2=10

4=2+2

10+2=12

8 + 4. The answer goes past ten, so make a ten first.
8 is 2 short of ten. Take that 2 out of the 4: 8 + 2 = 10, and 2 of the 4 is still to come.
Ten and 2 is easy to see: 8 + 4 = 12.

How it works.

01
8 + 4. The answer goes past ten, so make a ten first.
02
8 is 2 short of ten. Take that 2 out of the 4: 8 + 2 = 10, and 2 of the 4 is still to come.
03
Ten and 2 is easy to see: 8 + 4 = 12.