Title: Properties of Numbers Review
Course: quiz duplicate error

Q: Write an equivalent expression. Use a commutative law.

9 + b
- b + 9 (correct)
- 9b (incorrect)
- b9 (incorrect)
- 9(1 + b) (incorrect)
A: b + 9

Q: Write an equivalent expression. Use a commutative law.

y + 17
- 17 + y (correct)
- 17(y + 1) (incorrect)
- y17 (incorrect)
- 17y (incorrect)
A: 17 + y

Q: Write an equivalent expression. Use a commutative law.

3 + xy
- 3 + x + y (incorrect)
- xy + 3, or 3 + yx (correct)
- 3(1 + xy) (incorrect)
- 3xy, or 3yx (incorrect)
A: xy + 3, or 3 + yx

Q: Write an equivalent expression. Use a commutative law.

wx
- w ÷ x (incorrect)
- xw (correct)
- [Image] (incorrect)
- w + x (incorrect)
A: xw

Q: Write an equivalent expression. Use a commutative law.

pq + z
- pq - z (incorrect)
- pqz, or p + q + z (incorrect)
- z - pq (incorrect)
- qp + z, or z + pq (correct)
A: qp + z, or z + pq

Q: Write an equivalent expression. Use an associative law.

(x + 6) + y
- x(6 + y) (incorrect)
- x + (6 + y) (correct)
- (6 + x) + y (incorrect)
- y + (x + 6) (incorrect)
A: x + (6 + y)

Q: Write an equivalent expression. Use an associative law.

5 + (s + t)
- (s + t) + 5 (incorrect)
- 5(s + t) (incorrect)
- (5 + s) + t (correct)
- 5 + (t + s) (incorrect)
A: (5 + s) + t

Q: Write an equivalent expression. Use an associative law.

(6 + u) + v
- (6 + v) + u (incorrect)
- 6 + (u + v) (correct)
- (u + 6) + v (incorrect)
- v + (6 + u) (incorrect)
A: 6 + (u + v)

Q: Write an equivalent expression. Use an associative law.

a + (b + 8)
- (b + 8) + a (incorrect)
- a + (8 + b) (incorrect)
- a(b + 8) (incorrect)
- (a + b) + 8 (correct)
A: (a + b) + 8

Q: Write an equivalent expression. Use an associative law.

r + (7 + s)
- (7 + s) + r (incorrect)
- (r + 7) + s (correct)
- r(7 + s) (incorrect)
- r + (s + 7) (incorrect)
A: (r + 7) + s

Q: Write an equivalent expression. Use an associative law.

(8x)y
- (x8)y (incorrect)
- 8x + 8y (incorrect)
- 8(xy) (correct)
- (8y)x (incorrect)
A: 8(xy)

Q: Write an equivalent expression. Use an associative law.

2(ab)
- 2a + 2b (incorrect)
- (2a)b (correct)
- 2(ba) (incorrect)
- a(2b) (incorrect)
A: (2a)b

Q: Write an equivalent expression. Use an associative law.

(6s)t
- (s6)t (incorrect)
- 6s + 6t (incorrect)
- 6(st) (correct)
- t(6s) (incorrect)
A: 6(st)

Q: Write an equivalent expression. Use an associative law.

5(np)
- 5(n + p) (incorrect)
- 5(pn) (incorrect)
- 5n + 5p (incorrect)
- (5n)p (correct)
A: (5n)p

Q: Multiply.

3(x + 4)
- 3x + 3 (incorrect)
- 12x (incorrect)
- 3x + 4 (incorrect)
- 3x + 12 (correct)
A: 3x + 12

Q: Multiply.

8(9 + m)
- 72 + 8m (correct)
- 72 + 9m (incorrect)
- 72 + m (incorrect)
- 72m (incorrect)
A: 72 + 8m

Q: Multiply.

4(a + b)
- 4ab (incorrect)
- 4a + b (incorrect)
- 4a + 4b (correct)
- 8ab (incorrect)
A: 4a + 4b

Q: Multiply.

9(2x + 5)
- 2x + 45 (incorrect)
- 18x + 45 (correct)
- 18x + 5 (incorrect)
- 90x (incorrect)
A: 18x + 45

Q: Multiply.

3(3 + 4s)
- 9 + 36s (incorrect)
- 9 + 12s (correct)
- 9 + 4s (incorrect)
- 3 + 12s (incorrect)
A: 9 + 12s

Q: Multiply.

6(9x + 9y + 7)
- 54x + 54y + 7 (incorrect)
- 54x + 9y + 42 (incorrect)
- 54x + 54y + 42 (correct)
- 54x + 9y + 7 (incorrect)
A: 54x + 54y + 42