About this worksheet
In these sums the answer is given and one of the numbers is missing: 7 + __ = 12. The child has to think backwards, which shows whether addition and subtraction, or multiplication and division, are understood as two sides of one fact.
These sheets are also a first step towards algebra. The blank does the job that the letter x will do in later classes.
Tips for parents and teachers
- Let younger children use counters or fingers to find the missing part, then write it.
- Ask "how did you find it?" The words matter: "I counted on from 7" or "I took 7 away from 12" are both good ways.
- When the blank comes first (__ minus 5 = 9), many children get stuck. Show them that adding the two given numbers finds it.