Here are the solutions to the problems:
1. Work these out in your head:
- a) 18+28=46
- b) 8×9=72
- c) 26+32=58
- d) 890÷10=89
- e) 25×4=100
- f) 87÷5.
87=5×17+2
The remainder is 2.
- g) 5×1000=5000
5000−30=4970
2. Circle the correct answer.
- a) Another word for addition is:
- b) Minus means the same as:
- c) One million has ____ zeros.
- One million is 1,000,000.
- iii. 6
- d) The product of 20 and 200 is:
- 20×200=4000
- ii. 4 000
- e) When adding or subtracting, if a number ends with a 9 round it off to the next 10, and then take away or add ____.
- When you round a number ending in 9 up to the next 10 (e.g., 29 to 30), you add 1. To correct the sum or difference, you must then adjust by subtracting 1.
- iii. 1
- f) 62 r 3. The r stands for:
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