Worksheet: Subtracting by Counting Back: Numbers up to 20
In this worksheet, we will practice subtracting within 20 by counting back from the starting number.
Isabella put her counter on 12 then moved it back 2 spaces.
Help her find the missing number:
This is a subtraction machine.
It subtracts 3 from any number you put in.
What number will come out if you put 8 in?
What number will come out if you put 11 in?
What number will come out if you put 19 in?