Multiplication facts with arrays

The Maths Habit

Both boxes have the same number of dots. Which would you rather count? Why?

The one in rows. Count one row, then count the rows.

Array
Objects set out in equal rows.
Row
A line of objects going across.
Column
A line of objects going down.
Multiply
Find the total of equal groups.

3rows5in each row
  1. How many rows?Count down the side.
  2. How many in each row?Count along the top.
  3. Multiply.Rows × in each row. Turn it round and it is the same dots.

How many rows?

4

How many in each row?

9

The same dots, turned round. Is it the same number?

Yes. 2 × 6 = 6 × 2 = 12

How many dots are there? How many rows? How many in each row? Multiply. 3 × 6 = 18

rowsin each row36

How many dots are there? How many rows? How many in each row? Multiply. 4 × 8 = 32

4rowsin each row8

How many dots are there? How many rows? How many in each row? Multiply. 3 × 6 = 18

rowsin each row36

How many dots are there? How many rows? How many in each row? Multiply. 5 × 3 = 15

rowsin each row53

How many dots are there? How many rows? How many in each row? Multiply. 3 × 6 = 18

rowsin each row36

How many dots are there? How many rows? How many in each row? Multiply. 2 × 9 = 18

rowsin each row29

How many dots are there? How many rows? How many in each row? Multiply. 3 × 6 = 18

rowsin each row36

How many dots are there? How many rows? How many in each row? Multiply. 7 × 3 = 21

rowsin each row73

How many dots are there? How many rows? How many in each row? Multiply. 3 × 6 = 18

rowsin each row36

How many dots are there? How many rows? How many in each row? Multiply. 4 × 10 = 40

rowsin each row410

Multiplication facts with arrays worksheet, page 1

How many rows above the line? How many below?

5 and 2

How many rows above the line? How many below?

4 and 4: double

5rows2rows
  1. Split the rows into facts you know.5 rows is a fact you know. So is 2 rows.
  2. Work out each part.
  3. Add the two parts.8 rows? Split it 4 and 4: it is double.

Work out 7 × 4. Split the rows into facts you know. Add the two parts. 20 + 8 = 28

rowsrows52

Work out 8 × 6. Split the rows into facts you know. Add the two parts. 24 + 24 = 48

4rowsrows4

Work out 7 × 4. Split the rows into facts you know. Add the two parts. 20 + 8 = 28

rowsrows52

Work out 6 × 8. Split the rows into facts you know. Add the two parts. 40 + 8 = 48

Multiplication facts with arrays worksheet, page 2

Answer sheet

Thumbs up: fact. Thumbs down: fake.

  1. 6 × 7 = 42

    Fact

  2. 8 × 4 = 36

    Fake: it is 32

  3. 9 × 3 = 27

    Fact

  4. 7 × 8 = 54

    Fake: it is 56

  5. 12 × 5 = 60

    Fact

  1. List every array you can make with 24 dots.

    1 × 24, 2 × 12, 3 × 8, 4 × 6

  2. Which is bigger, 7 × 8 or 6 × 9? By how much?

    7 × 8, by 2

  3. Work out 12 × 12. Split the 12 rows into 10 and 2.

    120 + 24 = 144

  1. How many rows? How many in each row? Multiply.

    4 × 7 = 28

  2. This array shows 3 × 6 = 18. Write the fact turned round.

    6 × 3 = 18

  3. Work out 7 × 8. Split the rows into facts you know. Add the two parts.

    40 + 16 = 56
    52
Exit tickets to print