Revision: Column addition including adding decimals. Column subtraction including subtracting decimals

Revision: Column addition including adding decimals. Column subtraction including subtracting decimals.

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H T U H T U H T U

2 4 6 6 3 2 4 2 0

+ 1 2 7 + 5 6 + 2 3 8

3 7 3 6 8 8 6 5 8

H T U H T U H T U

5 5 9 3 4 6 7 4

+ 1 4 1 + 9 0 2 + 5 2 3

7 0 0 1 2 4 8 5 9 7

Adding Numbers


T U 1/10 T U 1/10 T U 1/10

3 0 7 2 4 9 3 7 3

+ 4 2 9 + 7 2 7 + 1 1 7

7 3 6 9 7 6 4 9 0

T U 1/10 T U 1/10 T U 1/10

3 0 9 5 2 9 6 7 2 7

+ 7 0 2 + 3 0 9 + 2 5 3

3 7 9 7 6 0 5 9 8 0

Adding Decimals


H T U H T U H T U

3 7 2 5 3 8 5 3 5

- 2 1 5 - 2 5 2 - 3 3 9

1 5 7 2 8 6 1 9 6

H T U H T U H T U

6 0 9 2 5 5 9 7 7

- 2 0 1 - 1 2 8 - 4 2 7

4 0 8 1 2 7 5 5 0

Subtracting Numbers


T U 1/10 T U 1/10 T U 1/10

8 7 7 4 4 7 3 2 1

- 6 2 6 - 3 5 7 - 2 1 9

2 5 1 9 0 1 0 2

H T 1/10 T U 1/10 T U 1/10

5 2 7 3 9 4 7 7 5

- 4 3 1 - 1 0 6 - 3 3 3

9 6 2 8 8 4 4 2

Subtracting Decimals

Starter Questions

75% of £ 200Q1. Calculate

Q2. Round to 1 decimal place 2.354.

Q3. How many minutes in 3hours

Q4. The answer to the question is 180. What is thequestion.

Revision: Multiply two digit numbersMultiply decimal numbers.

Learning Objective


H T U H T U H T U

3 7 2 3 8 4 0 5

x 5 x 9 x 9

1 8 6 0 3 4 2 3 6 4 5

H T U H T U H T U

4 1 4 6 2 7 7

x 5 x 7 x 7

2 0 7 0 4 3 4 5 3 9

Multiplying Numbers


3 5 x 3 4 6 1 x 2 3

30 5 60 1

x 30 900 150 1050 20 1200 20 1220

4 120 20 +140 3 180 3 +183

1 1 9 0 = 1 4 0 3

Multiplying 2 Digit Numbers: Grid Method


2 3 x 6 6 3 5 x 2 9

20 3 30 5

x 60 1200 180 1380 20 600 100 700

6 120 18 +138 9 270 45 +315

1 5 1 8 = 1 0 1 5

Multiplying 2 Digit Numbers: Grid Method


4.6 x 36 18 x 3.5

4 0.6 10 8

x 30 1200 180 1380 3 600 100 700

6 120 18 +138 0.5 270 45 +315

1 5 1 8 = 1 0 1 5

Multiplying Decimal Numbers: Grid Method

MNU 2-10aMNU 2-10b

Starter QuestionsStarter Questions

o o

2. What kind of angle is this

3. 56.98 10

4. Name the angle that is between 180 and 360

1. Calculate 14 x 100

Revision: Use bus stop method to divide including dividing with decimal remainders.

Learning Objective


4 3 4 ÷ 7 6 1 5 ÷ 5

6 2 1 2 3

7 4 3 4 5 6 1 5

4 2 6 ÷ 3 6 5 4 ÷ 6

1 4 2 1 0 9

3 4 2 6 6 6 5 6

Dividing Numbers


1 6 4 ÷ 5 3 8 5 ÷ 4

5 1 6 4 4 3 8 5

3 5 5 ÷ 9 2 1 7 ÷ 5

3 1

9 3 5 1 5 2 1 7

Dividing Numbers

Now try these…

CHUNKING

Starter Questions

o o

2. What kind of angle is this

3. 1.268 100

4. Name the angle that is between 0 and 90

1. Calculate 41.9 x 100

Revision: Find fractions of quantities.

Learning Objective


Finding Fractions of Numbers

1

3 This is the denominator

This is the numerator

To find a fraction of a number you can do this:

1) Divide the whole number by the denominator.

2) Multiply this answer by the numerator.

1

3of 15 1) 15 ÷ 3 = 5

2) 5 x 1 = 5= 5


Linking Fractions and DivisionFractions and dividing are very similar. The denominator is what you divide by. Click on the fractions to match them to the division questions:

1/3 of 24

1/6 of 24

1/2 of 24

1/8 of 24

24 ÷ 3

24 ÷ 2

24 ÷ 8

24 ÷ 6

= 8

= 12

= 3

= 4


Finding More Fractions of Numbers

Remember: Divide the whole number by the denominator. Multiply this answer by the numerator.

2/3 of 21

3/5 of 20

3/4 of 16

Divide the whole number by the denominator

Multiply this answer by the numerator.

21 ÷ 3 = 7 7 x 2 = 14

Answer

14

20 ÷ 5 = 4 4 x 3 = 12 12

16 ÷ 4 = 4 4 x 3 = 12 12


Finding More Fractions of Numbers

Remember: Divide the whole number by the denominator. Multiply this answer by the numerator.

2/6 of 30

3/10 of 50

2/3 of 600

Divide the whole number by the denominator

Multiply this answer by the numerator.

30 ÷ 6 = 5 5 x 2 = 10

Answer

10

50 ÷ 10 = 5 5 x 3 = 15 15

600 ÷ 3 = 200 200 x 2 = 400 400


Finding Fractions of NumbersClick on the question to reveal the answer

30 ¾ of 40

21

5

40

20

10

36

8

12

10

9

35

7/10 of 30

1/3 of 15

4/5 of 50

¼ of 80

2/5 of 25

4/6 of 54

2/7 of 28

3/20 of 80

5/9 of 18

3/8 of 24

5/6 of 42


Using a Calculator to Find Fractions of Numbers

Click on the question to reveal the answer

37.5 ¾ of 50

126

63

22.5

126

182

54

195

57

2/5 of 315

1/3 of 189

¼ of 90

6/7 of 147

2/6 of 546

3/20 of 360

5/9 of 351

3/8 of 152

Starter Questions

Q1. Convert to 24hr clock

Q2. Round to 1 decimal place 103.525

Q3. How many minutes in 6 hours

Q4. Find the time difference between 5.12am and 2.34pm

8.15am 10.02pm

Revision: Find percentages of numbers.

Learning Objective


Finding Percentages of Numbers

30% of 40

1) Find 10% first. This can be done by dividing the number by 10

10% of 40 = 4

2) If 10% = 4, then 30% = 12 (there are 3 lots of 10% in 30%)

100% = 4090% = 3680% = 3270% = 2860% = 2450% = 2040% = 1630% =1220% = 810% = 4

This box represents 40

30% of 40 = 12



Remember: To find 10%, first divide the whole

number by 10.

30% of 60

60% of 20

20% of 200

Find 10% first Multiply this by how many lots of 10% there are

60 ÷ 10 = 6 6 x 3 = 18

Answer

18

20 ÷ 10 = 2 2 x 6 = 12 12

200 ÷ 10 = 20 20 x 2 = 40 40


Finding Smaller Percentages of Numbers

6% of 300

1) Find 1% first. This can be done by dividing the number by 100

1% of 300 = 3

2) If 1% = 3, then 6% = 18 (there are 6 lots of 1% in 6%)

6% of 300 = 18

9 1215183 6

This box represents 300. Each square is worth 1%



Remember: To find 1%, first divide the whole number by

100.

6% of 400

15% of 80

7% of 500

Find 1% first Multiply this by how many lots of 1% there are

400 ÷ 100 = 4 4 x 6 = 24

Answer

24

80 ÷ 100 = 0.8

0.8 x 15 = 12 12

500 ÷ 100 = 5 5 x 7 = 35 35


Finding Percentages of NumbersClick on the question to reveal the answer

8 20% of 40

6

10

42

198

15

32

12

30

10

72

400

20% of 30

2% of 500

70% of 60

99% of 200

30% of 50

40% of 80

60% of 20

3% of 1,000

5% of 200

12% of 600

2% of 20,000


Using a Calculator to Find Percentages of Numbers

Click on the question to reveal the answer

90 20% of 450

147.6

1,012

164.9

246.4

48

150

67.5

1,011

18% of 820

23% of 4,400

97% of 170

44% of 560

8% of 600

6% of 2,500

15% of 450

30% of 3,370

Documents

Revision: Column addition including adding decimals. Column subtraction including subtracting decimals