Multiplying with the grid method

In Miss Joh's maths class we have been multiplying 3 x 1 digit and 2 x 2 digit's using the grid method of multiplication.   This method of multiplying, is the step before we begin to learn about long multiplication.




To ensure that we are developing our sense of number, as well as our calculation skills, we have been practicing estimating before beginning a calculation .

For example 3 x 678  we will estimate first 3 x 700
For 23 x 56  we would estimate   20 x 60

This gives us a sense of how big the number is, as well as if we have made a calculation error.