Equations
Answers are for parents and teachers.
1
Solve and check: x + 14 = 39; x − 25 = 41; 76 − x = 50
25, 66, 26
2
Write an equation: A basket had some apples. 12 were taken and 23 are left.
x − 12 = 23, x = 35
3
Write an equation: A shelf has 45 books; 21 are stories and the rest poetry. Poetry books?
21 + x = 45, x = 24
4
Make three inverse problems from: 8 red and 5 yellow balloons.
8 + 5 = 13; 13 − 5 = 8; 13 − 8 = 5
5
Which value of x is right: x + 30 = 70 (30, 40, 100)?
40