☰ Contents · Mathematics

Adding up to a round number and subtracting from a round number

Lessons 11–15 · 5 lessons · I.V. Repyova, Y.V. Zemlina. Mathematics Grade 2, Parts 1–4. Novda Edutainment, 2023
Answers are for parents and teachers.
1
Calculate: 38 + 2, 54 + 6, 87 + 3.
2
Calculate: 80 − 5, 50 − 9, 70 − 2.
3
Problem: One shelf has 24 books and another has 16. How many in all?
4
Problem: A shop had 60 kg of flour. 8 kg were sold. How many kg are left?
5
The easy way: 3 + 8 + 7 + 2.