MathsWeek 4 – Summer 2

Addition

Thursday

25/06/20LO: To add different amounts of money

Starter

Starter ANSWERS

We can use counters to help us add numbers together. Just remember to exchange when you have 10 of any value.

10 ones = 1 ten

10 tens = 1 hundred =

=

Example:

Home tip!You can use different objects instead of counters at home. You could use different coloured lego pieces to represent the different values.10 hundreds = 1

thousands =

Adding MoneyQuestion: £54.00 + £33.00 = £87.00 1. First, line up the numbers accurately so that they are in the

correct place value columns. In this case you need numbers in the ones column and the tens column. There is only pounds, and no pence.

2. Look at the hundredths column. YOU MUST ALWAYS START WITH THE SMALLEST PLACE VALUE COLUMN. There is nothing in the hundredths to add together so the answer is 0. 0 + 0 = 0

3. Then look at the tenths column. Again, there is nothing to add together so the answer is 0

0 + 0 = 0 4. Then look at the ones column and add them together

4 + 3 = 75. Then look at the tens column and add them together.

50 + 30 = 80.6. There was no exchanging involved so the answer is:

£54 + £33 = £87.007. Don’t forget to include the pound sign when you are writing your answer!

+5 4

3 00 0

0 003

.

.5 5

£

££

..T O tenths

This is the decimal point. It separates the pounds from the pence. It ALWAYS stays in the same place!!

hundredths

£29.00 £52.00

£64.00£44.00

£27.00

£6.00 £15.00

£21.00

£4.00

£10.00

Task

Using the prices on the previous slide, work out the price of buying these items:1. The mug and the skateboard2. The puzzle and the train3. The baseball cap and the castle4. The notebook and the cars5. The t-shirt and the scooter6. The skateboard and the train7. The mug and the puzzle8. The castle and the scooter9. The t-shirt and the cars10.The baseball cap and the skateboard.

Challenge – can you work out these ones:1. The mug, the skateboard and the train2. The castle, the notebook and the puzzle3. The baseball cap, the t-shirt and the scooter

Task answers1. £10.00 + £29.00 = £39.002. £44.00 + £21.00 = £65.003. £6.00 + £52.00 = £58.004. £4.00 + £27.00 = £31.005. £15.00 + £64.00 = £79.006. £29.00 + £44.00 = £73.007. £10.00 + £21.00 = £31.008. £52.00 + £64.00 = £116.009. £15.00 + £27.00 = £42.0010. £6.00 + £29.00 = £35.00

Challenge answers1. £10.00 + £29.00 + £44.00 = £83.002. £52.00 + £4.00 + £21.00 = £77.003. £6.00 + £15.00 + £64.00 = £85.00

What happens when there is pound and pence involved?

Question: Bob goes to the shop and buys a skateboard and a toy castle. The skateboard costs £32.54 and the castle costs £23.78. How much does he spend altogether?

£32.54

£23.38

Extension

+3 2

3 89 2

1. First, line up the numbers accurately so that they are in the correct place value columns. You also need to include a decimal point, as you are now adding pounds and pence.

2. Look at the hundredths column. YOU MUST ALWAYS START WITH THE SMALLEST PLACE VALUE COLUMN.

3. Add the hundredths column together4 + 8 = 12

Place the 2 in the answer box and exchange a 1, as you have 10 left over. This goes to the tenths column.4. Look at the tenths column and add them together. Don’t forget to add the 1, that has been exchanged.

5 + 3 = 8 8 + 1 = 95. LEAVE THE DECIMAL POINT WHERE IT IS!!6. Look at the ones column and add them together

2 + 3 = 57. Then look at the tens column and add them together

30 + 20 = 58. The answer is

£32.54 + £23.38 = £55.929. Don’t forget to include the pound sign when you are writing your answer!

T O .tenths

5 432

.

.

This is the decimal point. It separates the pounds from the pence. It ALWAYS stays in the same place!!

.

hundredths

5 5

£££

Method

1

Practice

Question: Bob goes to the shop and buys a puzzle and some toy cars. The puzzle costs £11.46 and the cars costs £12.73. How much does he spend altogether?

£11.46 £12.73

+1 1

2 31 9

1. First, line up the numbers accurately so that they are in the correct place value columns. You also need to include a decimal point, as you are now adding pounds and pence.

2. Look at the hundredths column. YOU MUST ALWAYS START WITH THE SMALLEST PLACE VALUE COLUMN.

3. Add the hundredths column together6 + 3 = 9

4. Look at the tenths column and add them together. 4 + 7 = 11

Place the 1 in the answer box and exchange a 1 as you have 10 left over. This goes to the ones column. 5. LEAVE THE DECIMAL POINT WHERE IT IS!!6. Look at the ones column and add them togetherDon’t forget to add the 1, that has been exchanged.

1 + 2 = 3 3 + 1 = 47. Then look at the tens column and add them together

10 + 10 = 208. The answer is

£11.46 + 12.73 = 24.199. Don’t forget to include the pound sign when you are writing your answer!

T O .tenths

4 671

.

.

This is the decimal point. It separates the pounds from the pence. It ALWAYS stays in the same place!!

.

hundredths

2 4

£££

Method – How did you get on?

1

£29.44 £24.74

£34.95£22.38

£27.48

£6.73 £15.32

£21.78

£4.36

£10.94

Extension

Using the prices on the previous slide, work out the price of buying these items:1. The mug and the skateboard2. The puzzle and the train3. The baseball cap and the castle4. The notebook and the cars5. The t-shirt and the scooter

Extension answers

1) £10.94 + £29.44 = £40.382) £21.78 + £22.38 = £44.163) £6.73 + £24.74 = £31.474) £4.36 + £27.48 = £31.845) £15.32 + £34.95 = £50.27