Multiplication by partitioning leading to short multiplication (3 by 1-digit)
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Why this why now
This unit develops the understanding of using short multiplication for 2-digit by 1-digit calculations and introduces 3-digit by 1-digit multiplication. Pupils are encouraged to use estimation to support accurate calculation. Having explored short multiplication, pupils will later go on to look at how knowledge of equivalence in multiplicative relationships can support both mental and written methods of calculation.
Prior knowledge requirements
- Recall multiplication facts
- Partition numbers into hundreds, tens, and ones
- Multiply each part and recombine to solve
Threads
Why this why now
This unit develops the understanding of using short multiplication for 2-digit by 1-digit calculations and introduces 3-digit by 1-digit multiplication. Pupils are encouraged to use estimation to support accurate calculation. Having explored short multiplication, pupils will later go on to look at how knowledge of equivalence in multiplicative relationships can support both mental and written methods of calculation.
Prior knowledge requirements
- Recall multiplication facts
- Partition numbers into hundreds, tens, and ones
- Multiply each part and recombine to solve
Multiplication by partitioning leading to short multiplication (3 by 1-digit)
In this unit pupils will multiply a 3-digit number by a single-digit number using expanded and short multiplication.
5 lessons in unit
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