Calculating with decimal fractions
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Why this why now
This unit builds on previous units exploring decimal place value and addition and subtraction of decimals. Pupils use place value to multiply and divide decimals by 10, 100 and 1,000. They solve problems in the context of measures, including some conversion between common units. Pupils then extend their use of formal calculation strategies to include decimals. This will be applied in future lessons including more focused work on converting between units.
Prior knowledge requirements
- Identify equal parts of a whole
- Name common fractions (1/2, 1/3, 1/4)
- Use visual models for fractions
Threads
Why this why now
This unit builds on previous units exploring decimal place value and addition and subtraction of decimals. Pupils use place value to multiply and divide decimals by 10, 100 and 1,000. They solve problems in the context of measures, including some conversion between common units. Pupils then extend their use of formal calculation strategies to include decimals. This will be applied in future lessons including more focused work on converting between units.
Prior knowledge requirements
- Identify equal parts of a whole
- Name common fractions (1/2, 1/3, 1/4)
- Use visual models for fractions
Calculating with decimal fractions
In this unit pupils will explain the effect of multiplying and dividing a number by 10, 100 and 1,000 and use their knowledge of multiplying decimal fractions by whole numbers to solve measures problems.
15 lessons in unit
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