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Mental Maths

Use a pecil and paper to help you.

1. 3.6 - 0.3 =
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2. £1 is worth 0.74 Dinars. How much is £2 worth?
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3. How much would 8 sweets at 9p cost?
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4. 5.6 - 0.2 =
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5. 5.1 %2b 0.2 =
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6. 1.8 - 0.7 =
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7. Ben pours 0.16 litres of blackcurrant into a cup and then adds double this amount of water. How much drink does Ben have?
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8. 0.5 %2b 3.2 =
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9. Yesterday I brought 7.0m of string and today I used 4.9 m of of it. How much string do I have left?
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10. What number is half of 9.8?
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11. In the warehouse each crate of beans holds 300 tins. There are 70 crates. How many tins of beans are in the warehouse?
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12. What is the total of 3.7 and 5.8?
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13. 0.6 %2b 3.3 =
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14. What number must be added to 6.1 to make 10?
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15. 8 x 9 =
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16. 1.2 %2b 0.7 =
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17. 42 / 7 =
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18. I think of a number, halve it and add 9. The answer I get is 11.3. What was the number?
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19. What is the difference between 8.1 and 3.8 ?
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20. £1 is worth 90 Indian Rupees. How many Rupees are worth £60?
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21. 7 x 5 =
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22. 200 Japanese Yen are equal to £1. How many are equal to £30?
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23. Mel buys two canes. One is 3.68 m long and the other is twice this length. What is the total length of the two canes?
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24. I think of a number, double it and subtract 1.2. The answer I get is 10. What was the number?
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25. I buy two bags of potatoes. The first weighs 3.12 kg and the other weighs half this much. What do they weigh altogether?
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26. How many more do I add to 6.8 to make 9.4?
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27. Roy makes two shelves? One is 17.84 cm wide and the other is half this width. How wide is the second shelf?
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28. 7 x 9 =
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29. The winner of the 100m race finished in 14.78 seconds. The person in last place took double this time. How long did the last person take?
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30. 54 / 9 =
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31. 7 x 8 =
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32. 2.5 - 0.2 =
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33. 9 x 9 =
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34. Jack scored 6.7 on a computer game. Emily scored double this. What was Emily%27s score?
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