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Year 1 Calculation - Multiplication Using Arrays
2 groups of 4 is the same as 4 groups of 2.

Year 1 Calculation - Multiplication Using Arrays

In KS1 Maths, arrays help us see multiplication. Rows and columns show equal groups. Count in steps to find totals quickly.

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(quiz starts below)

Fascinating Fact:

Double a row to find new facts. From 3 × 4 to 6 × 4 doubles the total to 24.

In KS1 Maths, an array shows equal groups in neat rows and columns. It turns repeated addition into quick multiplication. Try the fun Multiplication Game to practise spotting arrays and facts.

  • Array: A tidy set of objects in rows and columns that shows equal groups.
  • Row: A horizontal line of objects across.
  • Column: A vertical line of objects down.
What is an array in Year 1 maths?

An array is a picture of equal groups in rows and columns. It helps children see totals quickly and understand multiplication.

How do arrays help with multiplication?

Arrays show repeated addition as rows and columns. For 3 rows of 4, you can count 4+4+4 or 3 × 4 to make 12.

What is the difference between rows and columns?

Rows go across, like seats in a cinema. Columns go up and down, like posts on a fence.

Question 1
18
12
8
14
3 groups of 4, or 4 + 4 + 4 = 12
Question 2
3 + 3 + 3
6 + 6 + 6
3 x 3
6 x 6
3 x 6 is the same as 3 groups of 6, or 6 + 6 + 6
Question 3
30
13
26
15
5 groups of 3, or 3 + 3 + 3 + 3 + 3 = 15
Question 4
2 + 2 + 2 + 2 + 2
4 x 5
5 + 5 + 5 + 5 + 5
5 x 5
5 x 2 is 5 groups of 2, or 2 + 2 + 2 + 2 + 2
Question 5
3 + 3 + 3 + 3 + 3 + 3
6 + 6 + 6 + 6 + 6 + 6
3 x 3
6 x 6
6 x 3 is the same as 6 groups of 3, or 3 + 3 + 3 + 3 + 3 + 3
Question 6
2 + 5
4 x 5
5 + 5
5 x 5
2 x 5 is 2 groups of 5, or 5 + 5
Question 7
72
12
27
14
2 groups of 7, or 7 groups of 2, makes 14
Question 8
2 + 2
4 x 2
4 + 4 + 4
2 x 2
2 groups of 4 is the same as 4 groups of 2
Question 9
6
8
4
3
2 groups of 3, or 3 + 3 = 6
Question 10
18
9
99
81
3 x 3 = 9. 9 plus 9 = 18
You can find more about this topic by visiting BBC Bitesize - How to multiply using an array

Author:  Angela Smith (Primary School Teacher & KS1 Quiz Writer)

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