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23 + 7 = 10 x ?

A

3

B

4

C

5

D

6

2 x (23 + 7) = 10 x ?

A

3

B

4

C

5

D

6

2 x (23 + 7) ÷ 3 = 10 x ?

A

5

B

4

C

2

D

3

Explain what we have been doing in these quiz questions?

If n = 2a and p = 5a what is p + a?

A

3a

B

4a

C

6a

D

7a

If n = 2a and p = 5a what is 3n?

A

3a

B

4a

C

6a

D

7a

If n = 2a and p = 5a what is p - n?

A

3a

B

4a

C

6a

D

7a

Selected the related equations from the options below for 3 x 6

A

15 + 3

B

(4 + 6) x 2

C

2 x 8 + 1

D

4 x 5 - 2

Selected the related equations from the options below for 3 x 7 + 9

A

3 x 10 - 1

B

(7 - 2) x 6

C

8 x 5 + 10

D

5 x 5 + 5

Selected the related equations from the options below for 12 - 7 x 3

A

3 x 3

B

27 ÷ -3

C

(14 + 4) ÷ -2

D

5 x -3 - 6

If 4 + 8 = 3 x 4, which of the following calculations is incorrect.

A

4 + 8 - 2 = 3 x 4 - 2

B

4 + 8 x 5 = 3 x 4 x 5

C

7(4 + 8) = 7 x 3 x 4

D

(4 + 8) ÷ 2 = 3 x 4 ÷ 2

A

a + 2b

B

(2a + 4b) ÷ 4

C

a ÷ 2 + b

D

b + 0.5a

A

10p

B

10g + 10w

C

40w

D

40r