1. Decimals Year 3-4 (age 7-9) - Tenths

3. 10 3 6 8 2 7 5 1 4 9 10 three tenths two tenths six tenths
seven tenths
one tenth
eight tenths
ten tenths
one whole
five tenths
four tenths
nine tenths 10
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9 1

4. 4
four tenths 10
0.4

5. 8
eight tenths 10
0.8

6. 5
five tenths 10
0.5

7. 0.2 A
0.5 B
0.9 C 1

8. 0.3 A
0.4 B
0.8 C 1

10. 0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0 1 2

11. 17 7
one and seven tenths
seventeen tenths 1 10 10
1.7

12. 15 5
one and five tenths
fifteen tenths 1 10 10
1.5

13. 23 3
two and three tenths
twenty-three tenths 2 10 10
2.3

14. 21 1
two and one tenth
twenty-one tenths 2 10 10
2.1

16. . 4 7 5 . Tens Units Tenths Round to the nearest whole number. 4 5 4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9 5

17. . 7 3 7 . Tens Units Tenths Round to the nearest whole number. 7 8 7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9 8

18. . 1 4 5 15 . Tens Units Tenths Round to the nearest whole number. 14
14.1
14.2
14.3
14.4
14.5
14.6
14.7
14.8
14.9 15

19. . 6 6 1 66 . Tens Units Tenths Round to the nearest whole number. 66
66.1
66.2
66.3
66.4
66.5
66.6
66.7
66.8
66.9 67

20. 8.8 cm -> 9 cm 9.1 cm -> 9 cm 18.2 cm -> 18 cm 13.9 cm ->
Round these lengths to the nearest centimetre.
8.8 cm ->
9 cm
9.1 cm ->
9 cm
18.2 cm ->
18 cm
13.9 cm ->
14 cm

21. Estimate by rounding to the nearest whole number.
7.8 x 3.1
29.8 – 5.5
3 + 4 = 7
8 x 3 = 24
= 24
8.2 – 4.4
31.6 ÷ 4.3
54.1 ÷ 8.8
8 - 4 = 4
32 ÷ 4 = 8
54 ÷ 9 = 6

23. Estimate by rounding to the nearest whole number.
7 x 3.14
29.8 – 5.57
3 + 4 = 7
7 x 3 = 21
= 24
8.26 – 4.41
31.67 ÷ 4
54.14 ÷ 9
8 - 4 = 4
32 ÷ 4 = 8
54 ÷ 9 = 6

25. 3 . 2
2 . 6 + 5 8 .

26. 3 . 7
2 . 5 + 6 2 . 1

27. 2 . 8
2 . 7 + 5 5 . 1

28. + 4 2 5 . 1 1

29. + 8 . 1 1

31. =
6.2 +3
-0.1
3.3
6.2
6.3

32. =
9.4 +4
-0.1
5.5
9.4
9.5

33. 5.7 – 1.9 =
3.8 -2
+0.1
3.7
3.8
5.7

34. 7 – 2.9 =
4.1 -3
+0.1 4
4.1 7

36. =
6.2
(2 x 3) – 0.1 =
– 0.1 =
6.3 – 0.1 =
6.2

37. =
10.1
(2 x 5) – =
10 – = =
10.1

39. 3 . 4
1 . 1 - 2 3 .

40. 2 1
3 . 2
2 . 6 - 6 .

41. 3 1
4 . 0
2 . 5 - 1 5 .

42. 8 1 - 1 6 7 .

43. 4 1 - 2 3 4 .

45. What we know about dividing by 10
When we divide by ten, we move one place value to the right.
70 ÷ 10 = 7
RECAP
What we know about dividing by 10
Hundreds
Tens
Units
Tenths
7 0
Remember that 7.0 = 7
Any number followed by .0 is just that number.
e.g. 9.0 is 9, 28.0 is 28, is 253, etc.

46. What we know about dividing by 10
When we divide by ten, we move one place value to the right.
260 ÷ 10 = 26
RECAP
What we know about dividing by 10
Hundreds
Tens
Units
Tenths

47. When we divide by ten, we move one place value to the right.
4 ÷ 10 =
0.4
Hundreds
Tens
Units
Tenths 4
.4 is the same as 0.4
When we divide 4 by 10, we have no units and four tenths.

48. 4 ÷ 10 =
0.4

49. When we divide by ten, we move one place value to the right.
6 ÷ 10 =
0.6
Hundreds
Tens
Units
Tenths 6

50. 6 ÷ 10 =
0.6

51. When we divide by ten, we move one place value to the right.
9 ÷ 10 =
0.9
Hundreds
Tens
Units
Tenths 9

52. 9 ÷ 10 =
0.9

54. What we know about dividing by 10
When we divide by ten, we move one place value to the right.
70 ÷ 10 = 7
RECAP
What we know about dividing by 10
Hundreds
Tens
Units
Tenths
Hundredths 7
Remember that 7.0 = 7

55. 7 1 71 ÷ 10 = 7.1 Hundreds Tens Units Tenths Hundredths
When we divide by ten, we move one place value to the right.
71 ÷ 10 =
7.1
Hundreds
Tens
Units
Tenths
Hundredths 7 1

56. 1 3 13 ÷ 10 = 1.3 Hundreds Tens Units Tenths Hundredths
When we divide by ten, we move one place value to the right.
13 ÷ 10 =
1.3
Hundreds
Tens
Units
Tenths
Hundredths 1 3

57. 13 ÷ 10 =
1.3

58. 2 8 28 ÷ 10 = 2.8 Hundreds Tens Units Tenths Hundredths
When we divide by ten, we move one place value to the right.
28 ÷ 10 =
2.8
Hundreds
Tens
Units
Tenths
Hundredths 2 8

59. 28 ÷ 10 =
2.8

60. 3 9 39 ÷ 10 = 3.9 Hundreds Tens Units Tenths Hundredths
When we divide by ten, we move one place value to the right.
39 ÷ 10 =
3.9
Hundreds
Tens
Units
Tenths
Hundredths 3 9

61. 39 ÷ 10 =
3.9