MTC MTC Mental Math Strategies

Question 1

Using the doubling strategy, what is 4 × 8? (Start with 2 × 8 = 16, then double)

Accepted Answer

32

Answer

2 × 8 = 16, and 16 doubled = 32, so 4 × 8 = 32.

Question 2

Using the doubling strategy, what is 8 × 6? (Start with 4 × 6 = 24, then double)

Accepted Answer

48

Answer

4 × 6 = 24, and 24 doubled = 48, so 8 × 6 = 48.

Question 3

Using the 'multiply by 10 then halve' strategy, what is 5 × 8?

Accepted Answer

40

Answer

10 × 8 = 80, and 80 ÷ 2 = 40, so 5 × 8 = 40.

Question 4

Using the near-ten strategy, what is 9 × 7? (Use 10 × 7 first)

Accepted Answer

63

Answer

10 × 7 = 70, and 70 − 7 = 63, so 9 × 7 = 63.

Question 5

Using the doubling strategy, what is 12 × 7? (Start with 6 × 7 = 42, then double)

Accepted Answer

84

Answer

6 × 7 = 42, and 42 doubled = 84, so 12 × 7 = 84.

MTC - Multiplication Tables Check Practice Test