Multiply a 3-digit by a 1-digit number with multiple regroups | Maths

Starter quiz

Order the multiplication equations in ascending order.
- 1
  
  ⇔
  
  7 × 8
- 2
  
  ⇔
  
  6 × 7
- 3
  
  ⇔
  
  7 × 4
- 4
  
  ⇔
  
  3 × 8
- 5
  
  ⇔
  
  9 × 0
___ and ___ are the partial products in this expanded multiplication.
- 14 and 42
- 42 and 140 ✓
- 182 and 42
- 26 and 7
There are ___ instances of regrouping.
- 0
- 1
- 2 ✓
- 3
True or false: 2 tens have been regrouped from the ones to the tens.
- True
- False ✓
Find the missing number.
- '3' ✓
Find the missing number.
- '6' ✓

Match the factor pair to the correct product.
- 3 × 3
  
  ⇔
  
  9 ✓
- 4 × 7
  
  ⇔
  
  28 ✓
- 7 × 7
  
  ⇔
  
  49 ✓
- 8 × 9
  
  ⇔
  
  72 ✓
- 9 × 3
  
  ⇔
  
  27 ✓
Find the missing partial product in this expanded multiplication.
- '240' ✓
Look at Andeep's calculation. How many times did he regroup?
- 0 regroup
- 1 regroup
- 2 regroups ✓
- 3 regroups
Match the equation to the correct partial product expression.
- 3 × 203
  
  ⇔
  
  600 + 9 ✓
- 216 × 3
  
  ⇔
  
  600 + 30 + 18 ✓
- 5 × 203
  
  ⇔
  
  1000 + 15 ✓
- 216 × 5
  
  ⇔
  
  1000 + 50 + 30 ✓
Use short or expanded to solve: 487 × 6 Write the answer in numeral form.
- '2922' ✓
Look at the image. How many cakes did Jacob bake?
- '3,192' ✓

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If the product of the ones digits is greater than 10 then you regroup ten ones into one ten.
If the product of the 1-digit number and the tens digit is greater than 100 then you regroup ten 10s into one 100
If the product of the 1-digit number and the 100s digit is greater than 1,000 then you regroup ten 100s into one 1,000

Incorrectly regrouping or forgetting to record a regrouped amount.

Clear teacher modelling. 'What does this digit represent?' 'Where do we place the regrouped amount?'

Short multiplication - A way of recording using columns to set out and calculate a multiplication.
Expanded multiplication - A way of recording the steps of a calculation focusing on partitioning one or more factors and showing partial products.
Regroup - The process of unitising and exchanging between place values is known as regrouping.