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

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 four tenths 10 0.4

8 eight tenths 10 0.8

5 five tenths 10 0.5

0.2 A 0.5 B 0.9 C 1

0.3 A 0.4 B 0.8 C 1

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

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

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

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

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

. 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

. 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

. 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

. 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

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

Estimate by rounding to the nearest whole number. 2.9 + 4.2 7.8 x 3.1 29.8 – 5.5 3 + 4 = 7 8 x 3 = 24 30 - 6 = 24 8.2 – 4.4 31.6 ÷ 4.3 54.1 ÷ 8.8 8 - 4 = 4 32 ÷ 4 = 8 54 ÷ 9 = 6

Estimate by rounding to the nearest whole number. 2.9 + 4.23 7 x 3.14 29.8 – 5.57 3 + 4 = 7 7 x 3 = 21 30 - 6 = 24 8.26 – 4.41 31.67 ÷ 4 54.14 ÷ 9 8 - 4 = 4 32 ÷ 4 = 8 54 ÷ 9 = 6

3 . 2 2 . 6 + 5 8 .

3 . 7 2 . 5 + 6 2 . 1

2 . 8 2 . 7 + 5 5 . 1

2 9 . 9 1 2 . 6 + 4 2 5 . 1 1

5 1 . 7 2 8 . 3 + 8 . 1 1

3.3 + 2.9 = 6.2 +3 -0.1 3.3 6.2 6.3

5.5 + 3.9 = 9.4 +4 -0.1 5.5 9.4 9.5

5.7 – 1.9 = 3.8 -2 +0.1 3.7 3.8 5.7

7 – 2.9 = 4.1 -3 +0.1 4 4.1 7

3.3 + 2.9 = 6.2 (2 x 3) + 0.3 – 0.1 = 6 + 0.3 – 0.1 = 6.3 – 0.1 = 6.2

4.8 + 5.3 = 10.1 (2 x 5) – 0.2 + 0.3 = 10 – 0.2 + 0.3 = 9.8 + 0.3 = 10.1

3 . 4 1 . 1 - 2 3 .

2 1 3 . 2 2 . 6 - 6 .

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

8 2 9 . 3 1 1 2 . 6 - 1 6 7 .

4 5 1 . 7 1 2 8 . 3 - 2 3 4 .

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, 253.0 is 253, etc.

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 2 6 0

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.

4 ÷ 10 = 0.4

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

6 ÷ 10 = 0.6

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

9 ÷ 10 = 0.9

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

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

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

13 ÷ 10 = 1.3

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

28 ÷ 10 = 2.8

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

39 ÷ 10 = 3.9