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Number

Multiply by Multiples of 10

1

Trace Multiples of 10

Trace each multiple of 10 carefully.

10
20
30
40
50
60
70
80
90
100
2

Skip Count by 10s (Set A)

Fill in the missing numbers.

10
20
40
50
?
50
60
80
90
?
20
30
40
?
?
3

Skip Count by 10s (Set B)

Fill in the missing numbers.

30
60
120
150
?
20
40
80
?
?
100
150
200
?
?
4

Skip Count by 20s

Fill in the missing numbers. Each step adds 20.

20
40
80
100
?
40
60
80
?
?
60
80
100
140
?
5

Skip Count by 50s

Fill in the missing numbers. Each step adds 50.

50
100
200
250
?
100
150
200
?
?
100
150
200
300
?
6

Match × 10 Facts

Draw a line from each multiplication to its answer.

3 × 10
7 × 10
5 × 10
9 × 10
1 × 10
50
10
90
30
70
7

Match × 20 Facts

Draw a line from each multiplication to its answer.

2 × 20
5 × 20
4 × 20
3 × 20
6 × 20
80
60
40
120
100
8

Match × 30 Facts

Draw a line from each multiplication to its answer.

3 × 30
2 × 30
5 × 30
4 × 30
7 × 30
150
120
90
210
60
9

Quick × 10 (Set A)

Circle the correct answer.

4 × 10 = ?

40
14
400

6 × 10 = ?

16
60
600

8 × 10 = ?

80
18
800

2 × 10 = ?

12
20
200
10

Quick × 10 (Set B)

Circle the correct answer.

11 × 10 = ?

110
21
1100

12 × 10 = ?

22
120
1200

15 × 10 = ?

25
150
1500

10 × 10 = ?

20
100
1000
11

× 10 Fact Bonds (Set A)

Find the missing number. The total is the product.

50
5
?
90
?
10
70
7
?
30
?
10
120
12
?
12

Groups of 10 (Stars)

Count the groups of 10. Write the total.

?
?
×10
×10
×10
?
13

Groups of 10 (Apples)

Count the groups of 10. Write the total.

?
×10
×10
×10
×10
?
×10
×10
×10
×10
×10
?
14

True or False? (× 10)

Circle TRUE or FALSE.

3 × 10 = 30

TRUE
FALSE

5 × 20 = 50

TRUE
FALSE

4 × 30 = 120

TRUE
FALSE

7 × 10 = 700

TRUE
FALSE
15

True or False? (× 10 – Set B)

Circle TRUE or FALSE.

6 × 20 = 120

TRUE
FALSE

8 × 30 = 240

TRUE
FALSE

9 × 40 = 320

TRUE
FALSE

Multiplying by 10 adds a zero to the end

TRUE
FALSE
16

Multiply by 10 (Set C)

Circle the correct product.

12 × 10 =

102
120
1,200

35 × 10 =

350
305
3,500

100 × 10 =

110
1,000
10,000

48 × 10 =

408
480
4,800
17

Multiply by 20 (Set C)

Circle the correct product.

5 × 20 =

50
100
200

8 × 20 =

140
160
180

15 × 20 =

200
250
300

12 × 20 =

220
240
260
18

Multiply by 30 and 40

Circle the correct product.

4 × 30 =

100
120
140

6 × 40 =

200
240
280

5 × 30 =

100
150
200

3 × 40 =

100
120
160
19

Match Products (× Multiples of 10)

Draw a line from each multiplication to its product.

3 × 30
5 × 40
7 × 20
4 × 50
200
90
140
200
20

Match Products (× 10, × 100)

Draw a line to match.

6 × 10
6 × 100
60 × 10
60 × 100
60
600
600
6,000
21

Multiply and Split (Set A)

Total = factor × multiple of 10. Find the missing value.

120
4
?
180
?
30
200
5
?
350
?
50
240
8
?
22

Multiply and Split (Set B)

Find the missing value.

150
3
?
280
?
40
360
9
?
500
?
50
420
6
?
23

Counting in Multiples of 10

Continue the pattern.

30
60
90
120
?
?
?
40
80
120
160
?
?
?
50
100
150
200
?
?
?
24

Counting in Multiples of 100

Continue the pattern.

100
200
300
400
?
?
?
300
600
900
1200
?
?
?
25

Sort Products: Less or More than 100

Sort each multiplication.

3 × 20
5 × 20
4 × 30
2 × 50
7 × 20
3 × 40
Less than 100
Equal to 100
More than 100
26

Explain the Strategy

Show how you can break apart multiplications.

6 × 30: Break into 6 × 3 × 10 = ___ × 10 = ___

4 × 50: Break into 4 × 5 × 10 = ___ × 10 = ___

8 × 40: Break into 8 × 4 × 10 = ___ × 10 = ___

Why does breaking the problem apart make it easier?

27

Count Groups of 10 (Stars)

Count the stars in each group. Write the total.

×10
×10
×10
?
×10
×10
×10
×10
×10
?
×10
×10
×10
×10
×10
×10
×10
?
28

Choose the Correct Product (Set A)

Circle the correct answer for each multiplication.

8 × 30 = ?

24
240
2400

5 × 60 = ?

30
300
3000

9 × 40 = ?

36
360
3600

12 × 20 = ?

24
240
2400
29

Choose the Correct Product (Set B)

Circle the correct answer for each multiplication.

7 × 30 = ?

21
210
2100

6 × 40 = ?

24
240
2400

4 × 50 = ?

20
200
2000

3 × 80 = ?

24
240
2400
30

Match the Multiplication (Mixed)

Draw a line from each multiplication to its answer.

5 × 20
3 × 40
7 × 10
2 × 80
6 × 50
70
120
100
300
160
31

Match Bigger Multiplications

Draw a line from each multiplication to its answer.

8 × 50
6 × 30
9 × 50
5 × 40
7 × 60
180
200
400
420
450
32

Multiply and Complete (Set A)

Find the missing numbers.

150
5
?
280
7
?
360
?
40
450
9
?
200
?
50
33

Multiply and Complete (Set B)

Find the missing numbers.

240
8
?
180
?
30
400
10
?
350
7
?
480
?
60
34

Which Is the Same?

Circle the multiplication that gives the same answer.

5 × 40 is the same as:

50 × 4
5 × 4
500 × 4

3 × 60 is the same as:

30 × 6
3 × 6
300 × 6

7 × 20 is the same as:

7 × 2
70 × 2
700 × 2

9 × 30 is the same as:

9 × 3
90 × 3
90 × 30
35

Sort Products: Less or Greater Than 200

Work out each product and sort it.

3 × 50 = ?
6 × 40 = ?
4 × 30 = ?
8 × 20 = ?
5 × 50 = ?
9 × 30 = ?
Less than 200
200 or more
36

Solve × 20 Problems

Work out each multiplication. Show your working.

14 × 20 = ___

16 × 20 = ___

23 × 20 = ___

37

Solve × 30 Problems

Work out each multiplication. Show your working.

15 × 30 = ___

13 × 30 = ___

21 × 30 = ___

38

Solve × 40 and × 50 Problems

Work out each multiplication. Show your working.

25 × 40 = ___

18 × 50 = ___

12 × 40 = ___

39

Spot the Error

One answer is wrong. Circle the INCORRECT one.

Which is WRONG?

6 × 30 = 180
7 × 20 = 160
5 × 40 = 200

Which is WRONG?

9 × 50 = 450
8 × 30 = 240
4 × 60 = 200

Which is WRONG?

3 × 70 = 210
5 × 80 = 400
12 × 20 = 220
40

Two-Digit × Multiples of 10

Solve these harder multiplications. Show your strategy.

32 × 20 = ___

45 × 30 = ___

28 × 40 = ___

16 × 50 = ___

41

Word Problems (× Multiples of 10) – Set A

Write a number sentence and solve each problem.

A school orders 30 boxes of pencils. Each box has 12 pencils. How many pencils altogether?

A baker makes 20 trays of muffins. Each tray holds 15 muffins. How many muffins in total?

42

Word Problems (× Multiples of 10) – Set B

Write a number sentence and solve each problem.

There are 40 rows of seats. Each row has 25 seats. How many seats altogether?

A truck carries 50 cartons. Each carton weighs 18 kg. What is the total weight?

43

Challenge: Find the Missing Factor

Work out what number goes in the gap.

___ × 20 = 260

___ × 30 = 450

___ × 50 = 600

___ × 40 = 360

44

Create Your Own × 10 Problems

Write your own multiplication problems using multiples of 10.

Write a word problem that uses × 20:

Write a word problem that uses × 50:

45

Home Activity: Multiples of 10 Hunt

Practise multiplying by multiples of 10 at home!

  • 1If a pack of biscuits has 20 biscuits, how many in 6 packs? In 9 packs?
  • 2A box holds 30 crayons. How many crayons are in 5 boxes? 8 boxes?
  • 3Count by 50s to 500. Write the numbers down.
  • 4Ask a family member to give you a number. Multiply it by 10, 20 and 30.
46

Multiply by 10: Patterns (Set C)

Fill in the missing products.

70
140
280
350
?
90
120
150
?
?
110
220
330
550
?
47

Multiply by 100 (Set A)

Circle the correct product.

3 × 100 = ?

30
300
3,000

7 × 100 = ?

70
700
7,000

12 × 100 = ?

120
1,200
12,000

25 × 100 = ?

250
2,500
25,000
48

Match × 50 Facts

Draw a line from each multiplication to its answer.

4 × 50
6 × 50
8 × 50
3 × 50
9 × 50
450
200
300
150
400
49

Multiples of 10 — Missing Factor (Set C)

Find the missing factor.

320
8
?
450
?
50
540
9
?
700
?
100
630
7
?
50

Multiply Using the Break-Apart Strategy

Show your working for each multiplication.

27 × 30: first find 27 × 3 = ___, then × 10 = ___

34 × 20: first find 34 × 2 = ___, then × 10 = ___

46 × 50: first find 46 × 5 = ___, then × 10 = ___

51

Sort Products of × Multiples of 10

Work out each product and sort it into the correct column.

4 × 60
3 × 80
9 × 70
5 × 60
7 × 80
6 × 90
Less than 300
300 to 500
More than 500
52

Groups of 10 Pictograph

Each apple = 10 objects. Use the graph to answer the questions.

Box A
Box B
Box C
Box D
1

How many objects are in Box B altogether?

2

Which box has the most objects? How many?

3

What is the total number of objects across all boxes?

4

How many more objects does Box D have than Box A?

53

× Multiples of 10 — Word Problems

Circle the correct answer.

A factory makes 30 cars each day. How many cars in 8 days?

24
240
2,400

Each shelf holds 20 books. There are 15 shelves. How many books?

30
300
3,000

A farmer plants 40 seeds per row. There are 12 rows. Total seeds?

48
480
4,800

50 students per class × 6 classes = ?

56
300
3,000
54

Multiply Large Numbers by Multiples of 10

Work out each multiplication.

125 × 10 = ___

245 × 10 = ___

130 × 100 = ___

256 × 100 = ___

55

Match Expressions to Products (Large Numbers)

Draw a line to match.

150 × 10
25 × 100
45 × 20
100 × 100
2,500
900
1,500
10,000
56

Challenge: Find the Missing Factor (Set B)

What number fills the gap?

___ × 30 = 510

___ × 40 = 680

___ × 50 = 750

___ × 20 = 380

57

Explain the Pattern When Multiplying by 10

Explain how multiplying by 10, 20, 30 etc. works.

Why does multiplying by 10 add a zero to the end of a whole number?

Try 15 × 10 and 25 × 10. What do you notice? Does the rule always work?

58

Multiplication Results Tally

Record which products fall in each range.

ItemTallyTotal
Under 100
100 to 499
500 to 999
1000 and over
59

Choose the Best Estimate

Circle the best estimate for each calculation.

6 × 29 ≈

6 × 20
6 × 30
6 × 40

8 × 51 ≈

8 × 40
8 × 50
8 × 60

5 × 38 ≈

5 × 30
5 × 40
5 × 50

12 × 19 ≈

12 × 10
12 × 20
12 × 30
60

Estimate Then Calculate

Estimate first, then work out the exact answer.

9 × 31: estimate = ___, exact = ___

7 × 48: estimate = ___, exact = ___

6 × 52: estimate = ___, exact = ___

61

Create Word Problems: × Multiples of 10

Write your own word problems and solve them.

Write a word problem for 8 × 30:

Write a word problem for 6 × 50:

62

Doubling Patterns with Multiples of 10

Find the next three terms in each pattern.

20
40
80
160
?
?
?
50
100
150
200
?
?
?
30
60
120
240
?
?
?
63

Sort Multiplications: Even or Odd Product?

Work out each product and sort by even or odd.

3 × 20
5 × 30
4 × 50
7 × 10
9 × 40
11 × 10
Even product
Odd product
64

Real World: Multiples of 10 Planning

Solve these real-world problems.

A school orders 30 chairs for each of 12 classrooms. How many chairs are needed?

An event expects 50 guests per table and has 18 tables. How many people can be seated?

If 40 books are packed per box, how many boxes are needed for 720 books?

65

Multiples of 10 — Larger Products (Set D)

Find the missing value.

800
?
100
600
6
?
4000
?
100
2100
7
?
3600
?
90
66

Division as Inverse of × 10

Use multiplication to help solve each division.

270 ÷ 30 = ?

9
90
900

360 ÷ 40 = ?

9
90
900

500 ÷ 50 = ?

1
10
100

420 ÷ 60 = ?

7
70
700
67

Multiplying by Multiples of 10: Summary

Show everything you know.

List three multiplications that give the answer 360.

Is 420 a multiple of 70? Show how you know.

Which is larger: 9 × 50 or 7 × 70? Show your working.

68

Investigate: Doubling Multiples of 10

Look at what happens when you double the multiple.

5 × 20 = ___. Now try 5 × 40 = ___. What happened?

3 × 30 = ___. Now try 3 × 60 = ___. What happened?

Write a rule: When I double the multiple of 10, the product ___.

What to do next

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