☰ Year plan · Mathematics

Algebraic expressions and formulas

Week 6 · Algebraic expressions and formulas: terms, like terms, simplifying and evaluating · 3 lessons
Answers are for parents and teachers.
1
Write “twice a number increased by 9” and “a number divided by 4, then minus 1”.
2
Simplify 9a + 2b − 4a + 5b.
3
Expand 6(2x − 5) and −(4x − 7).
4
Add (6x + 2) and (3x − 9).
5
The volume of a cube is V = a³. Find V when a = 4 cm.