☰ Contents · Mathematics

Brackets and adding across ten

Lessons 50–53 · 4 lessons · I.V. Repyova, Y.V. Zemlina. Mathematics Grade 1, Parts 1–4. Novda Edutainment, 2023
Answers are for parents and teachers.
1
Work out: (6 + 4) + 7; 12 − (3 + 6); 9 − 2 + 8
2
Make ten to work out: 9 + 2, 8 + 7, 7 + 7, 6 + 8
3
Draw how you worked out 8 + 5 (with a ten frame).
4
Problem: An aquarium had 9 fish. 4 more were added. How many now?
5
Problem: One group has 5 children, another 3, a third 6. Write a bracketed expression and work it out.