Multiply a 2-digit number by a 1-digit number using expanded multiplication (no regroups) | Maths

Starter quiz

Look at the multiplication equation. You can partition 17 into 10 and ______.

'7' ✓
Look at the image. Complete the equation.

'68' ✓
Select the correct partial product pair that completes the model in the image.

10 + 80

80 + 10 ✓

8 + 10

10 + 8
Select the correct partial product sums for this multiplication equation: 35 × 3

90 + 10 + 5

15 + 45 + 45

9 + 15

90 + 15 ✓
Match the multiplication equation with the correct partial product pair.

41 × 2

⇔

80 + 2 ✓

2 × 43

⇔

80 + 6 ✓

44 × 2

⇔

80 + 8 ✓
Which multiplication equations consist of zero regroups?

33 × 3 ✓

34 × 4

4 × 47

4 × 21 ✓

Sofia is chanting her 4 times tables. 4, 8, 12, ______ What comes next?

14

16 ✓

18

20
Look at the image. Which word is the correct label?

factor

product

partial product ✓

addends
Look at the image and the missing label. In a multiplication equation this number is known as the ______ .

'product' ✓
Using short multiplication calculate: 23 × 3

'69' ✓
Using short multiplication calculate: 43 × 2

'86' ✓
What is the missing factor in this expanded multiplication example?

'21' ✓

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Knowledge of times tables and place value helps when multiplying 2-digit numbers.
There are similarities between the representations of multiplication.
Arranging the factors in columns allows you to organise the partial products into a column addition.

When using the expanded method, pupils may not align the digits correctly with the same place value.

Use clear teacher modelling and continue to ask what each digit that has been recorded represents and link back to the place value chart.

Expanded multiplication - A way of recording the steps of a calculation focusing on partitioning one or more factors and showing partial products.
Partial product - Any of the multiplication results that lead up to an overall multiplication result.