Rectangular Arrays. Using rectangular arrays is another method on our list of common core multiplication strategies for 3rd and 4th graders. It is quite similar to the one I explained above ...

For example, once your child has mastered the x2 multiplication facts, you can discuss how 3x6 (3 sixes) can be calculated by doubling 6 (2x6) and adding one more 6. We’ve now realised that x3 ...

You will need to calculate using a column method, which is another name for long multiplication. This will allow you to multiply up to 4-digit numbers by 2-digit numbers.

For example, look at how we do multiplication when we multiply 121 x 14. We usually start by multiplying 4 with the top line, then multiply the top line by 1, like below.

Relating Multiplication and Division. Season 2 Episode 216 | 16m Video has Closed Captions | CC. Join Ms. Askew for a subtraction number talk with Springling! 01/06/2021 | Rating TV-Y.