Page 54 - Whole Numbers (Addition and Subtraction)

9. Calculate.
(a) 3 878 + 2 727 (b) 5 179 + 4 111

(c) 7 402 − 3 339 (d) 9 973 − 2 485
(e) 7 153 − 6 108 (f) 2 804 − 1 909

10. (a) Which of the following do you think will have the same
answer, if the calculations in brackets are done first?

A. (5 395 + 3 005) − 2 002
B. (5 395 − 3 005) + 2 002

C. 5 395 − (3 005 − 2 002)

D. 5 395 − (3 005 + 2 002)

(b) Do the calculations.

9.3 Add and subtract to find information

1. For a school concert there are 1 178 seats available in the hall.
On Monday, 457 tickets were sold and on Tuesday, 228 tickets.
How many more tickets need to be sold for all the seats to be
filled?
2. During a weekend the corner cafe sold 3 657 tins of cooldrink.
On Monday morning the cafe had only 274 tins of cooldrink
left. How many tins of cooldrink did the cafe have in stock
before the weekend?

3. Of the 1 589 learners in our school 873 are boys. How many
more boys than girls are in our school?

4. A stove costs R2 099 and a fridge costs R299 more. How much
do a fridge and a stove cost altogether?

5. Mrs Hlope wants to buy a washing machine that costs R3 478.
She has saved R1 460. How much more does she need to save?

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