VM Quiz 2 – Week 2 (Lesson 05 to 08)
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Question 1 of 22
1. Question
1 point(s)The digit sum of 436 is:
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Question 2 of 22
2. Question
1 point(s)The digit sum of a 2-figure number is 4 and the difference between its digits is 5. Which of these could be the number?
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Question 3 of 22
3. Question
1 point(s)The digit sum of 6489951 is:
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Question 4 of 22
4. Question
2 point(s)9 is added to a number. The digit sum of the result: is:
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Question 5 of 22
5. Question
3 point(s)Which is true for all positive numbers (more than 1 answer here):
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Question 6 of 22
6. Question
2 point(s)The digit sum of a 2-figure number is 3 and the first figure is twice the second, what is it (more than 1 answer here)?
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Question 7 of 22
7. Question
1 point(s)37 + 48 = 85. What is the corresponding digit sum check?
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Question 8 of 22
8. Question
2 point(s)347 x 8 = 2776. What is the corresponding digit sum check?
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Question 9 of 22
9. Question
2 point(s)Which appear correct, judging by their first figures? (more than 1 answer here):
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Question 10 of 22
10. Question
1 point(s)Which appear correct, judging by their last figures?
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Question 11 of 22
11. Question
1 point(s)Add mentally from left to right: 537 + 439
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Question 12 of 22
12. Question
1 point(s)Multiply mentally from left to right: 87 x 8
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Question 13 of 22
13. Question
1 point(s)Multiply mentally from left to right: 3457 x 6
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Question 14 of 22
14. Question
1 point(s)Use doubling and halving to find: 35 x 74
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Question 15 of 22
15. Question
1 point(s)In using this doubling and halving what is the BEST situation in which to use it?
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Question 16 of 22
16. Question
1 point(s)COULD this doubling/halving method be used to find, say, 35 x 43?
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Question 17 of 22
17. Question
1 point(s)Subtract from left to right: 638 – 349
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Question 18 of 22
18. Question
1 point(s)Subtract from left to right: 8470 – 5846
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Question 19 of 22
19. Question
1 point(s)In finding 8470 – 5846 from left to right, how many times is it necessary to reduce the column difference by 1?
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Question 20 of 22
20. Question
1 point(s)535 – 347 = 188. What is the corresponding digit sum check?
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Question 21 of 22
21. Question
2 point(s)671 – 487 = 184. What is the corresponding digit sum check?
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Question 22 of 22
22. Question
1 point(s)What is the remainder when 6399973 is divided by 9?
