Multiplying and dividing by 10, 100 and 1000

A complete lesson looking at the effect of multiplying and dividing integers and decimals by 10, 100 and 1000.

Activities included:

Starter:

• A prompt for pupils to share any ideas about what the decimal system is.
• Images to help pupils understand the significance of place value.
• Questions that could be used with mini whiteboards, to check pupils can interpret place value.

Main:

• A worksheet where, by repeated addition, pupils investigate the effect of multipliying by 10, initially with whole numbers but later with decimals.
• A slide to summarise these results, followed by some more mini whiteboard questions to consolidate.
• A prompt for pupils to use a calculator to investigate the effect of multiplying or dividing by positive powers of 10, followed by slides to help pupils reflect on their findings, and provide notes for all pupils.
• A related game for pupils to play (connect 4).

Plenary:
A very brief, bulleted summary of the history of the decimal system and the importance of the invention of zero.

Printable worksheets included.

Please review if you buy as any feedback is appreciated.