Simplifying expressions and review
Answers are for parents and teachers.
1
Open the brackets in 8(3y − 5).
24y − 40
2
Simplify 6a + 15 + 4a + 5.
10a + 20
3
Compute 71 × 18 + 29 × 18 by taking out the common factor.
1800
4
Solve 7x + 5x − 14 = 70.
7
5
A master makes 6 chairs a day and his apprentice 4. How many chairs do they make together in 5 days? Calculate in two ways.
50