Mixed numbers: like denominators, common denominators and models
Answers are for parents and teachers.
1
Work out 3 4/9 + 2 7/9.
5 11/9 = 6 2/9.
2
Work out 7 2/5 − 3 4/5 by regrouping.
7 2/5 = 6 7/5. 6 7/5 − 3 4/5 = 3 3/5.
3
Estimate 5 3/4 + 2 1/5, then find the exact sum.
Estimate 6 + 2 = 8. Exact: 5 15/20 + 2 4/20 = 7 19/20.
4
Work out 4 1/2 − 2 1/3.
4 3/6 − 2 2/6 = 2 1/6.
5
Hana has 3 1/4 m of ribbon and Nour has 2 1/2 m. How much ribbon do they have together?
3 1/4 + 2 2/4 = 5 3/4 m.