Examples of what pupils should know and be able to do
Calculate 324 × 56 using the grid method.
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.
What if pupils find this a barrier?
Use Multiplication Grid ITP - Zip file (458Kb). Hide some of the numbers around the outside but show some of the answers in the grid: discuss what the question could have been.
From level 4 to level 5 in mathematics year 8 intervention lesson 8N4.1. - Acrobat pdf document (51Kb) You may want to adapt this lesson.
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