Progressively harder doubling and halving; from teens, to 2-digit multiples of 5 to 3-digit multiples of 10.

This is where we make real headway with learning the 2x, 5x and 10x tables. Make sure they are recited as a whole and not just saying the answers (which is just counting up).

Doubling is coming up again. This time it's all multiples of 5. (Just remember that double 5 is 10.)

Today we are going to look at finding 10 times a number using base ten blocks and place value charts.