Step 5 Objective
Multiply and divide decimals mentally by 10 or 100, and integers by 1000, and explain the effect.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
What if pupils find this a barrier?
Use units that pupils are confident with, for example conversions between cm and m.
Encourage pupils to use common sense, e.g. 0.67 × 100. Is the answer larger or smaller?
- TL4Y7 Number 4 N4.1 - Acrobat pdf document (61Kb)
- TL5 Snapper 1 and 2 - Microsoft word document (39Kb)
Moving digits ITP - Zip file (457Kb) can be used to show that it is the digits that 'move' and not the decimal point.
Use Teaching mental calculation strategies loop cards set 10 - Acrobat pdf document (25Kb) to practise