4emes, review everything

5⁴ =

• 5 x 4

• 5 x 5 x 5 x 5

• 4 x 4 x 4 x 4 x 4

• 5 + 4

10⁴ =

• 40

• 0.001

• 10 000

• 1000

10^-2 =

• 1/100

• 100

• -100

• 1/20

4.5 x 10² =

• 4500

• 0.045

• 450

• 45

1/2 + 1/4 =

• 2/6

• 3/4

• 1/8

• 2/4

5/9 + 1/3 =

• 8/3

• 6/9

• 6/12

• 8/9

Simplify this expression:

3a - 7a + 2b

• 4a + 2b

• -4a + 2b

• 6ab

• 6a + b

Write an expression for the perimeter of this rectangle:

• n x n + 2

• n(n+2)

• 2n + 2

• 4n + 4

Write an expression for the area of this rectangle:

• n x n + 2

• n(n+2)

• 2n + 2

• 4n + 4

• 4a²+2a

• 4a²+2

• 4a + 2a

• 5a + 2a