What is Multiplicative Thinking?

Basically, it is all about competence with multiplication. The Victorian Government seems to be promoting the idea.

Here are some problems I have put onto cards to be used in a “Quiz Quiz Trade” situation.

19 x 6 = (Hint: do 20 x 6 = 120)

101 x 5 = (Hint: Do 100 x 5 first, then add another 5)

79 x 9 = (Hint: Do 8x 9 =, then make that 80 x 9 =, then take off 9)

14 x 5 = (Hint: Do 7 x 5 =, then double your answer)

13 x 8 = (Hint: Do 10 x 8, then add 3 x 8)

101 x 6 = (Hint: Do 100 x 6, then add 6)

17 x 4 = (Hint: Do10 x 4, then add 7×4)

19 x 3 = (Hint: Do 20 x 3, then take away 1×3)

21 x 3 = (Hint: Do 20 x 3, then add 1 x 3 )

22 x 6 = (Hint: Do11 x 6 and then double it. Or do 20 x 6 and then add 2 x 6)

19 x 5 = (Hint: Do 20 x 5 and then take away 1 x 5)

19 x 6 = (Hint: Do 20 x 6 and then take away 1 x 6)

19 x 7 = (Hint: Do 20 x 7 and then take away 1 x 7)

101 x 6 = (Hint: Do 100 x 6 and then add 1 x 6)

79 x 4 = (Hint: Do 8 x 4, then add a 0 to make it 80 x 4. Now take away 4.)

79 x 5 = (Hint: Do 8 x 5, then add a 0 to make it 80 x 5. Now take away 5.)

18 x 9 = (Hint: Do 9 x 9 =, and then double your answer)

18 x 6 = (Hint: Make it half of 18 to do the sum, then double your answer.)

79 x 2 = (Hint: Do 8 x 2, then add a 0 to make it 80 x 2. Now take away 2.)

14 x 4 = (Hint: Do 7 x 4, then double your answer.)