☰ Contents · Mathematics

Review: equations, inverse problems; adding and subtracting

Lessons 6–10 · 5 lessons · I.V. Repyova, Y.V. Zemlina. Mathematics Grade 2, Parts 1–4. Novda Edutainment, 2023
Answers are for parents and teachers.
1
Solve the equation: x − 31 = 42.
2
Solve the equation: 80 − y = 25.
3
Write two inverse sums for 46 + 22 = 68.
4
Problem: A field has 45 blue and 33 yellow flowers. How many flowers in all?
5
Calculate 5 dm 3 cm + 3 dm 4 cm (in cm).