Step 4 Objective
Extend written methods to long multiplication of a three-digit by a two-digit integer.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
Give pupils a multiplication question (for example, 147 x 32) calculated by both the grid method and long multiplication. Ask questions such as: What two numbers multiplied together give 4410? Or 294?
Give pupils three or four long multiplications with mistakes in them. Ask them to identify the mistakes and talk through what is wrong and how they should be corrected.