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Here is the answers for the  Part 3: Calculation Games Training A (Question 21-30) 21. 4+4+4=12 (person) or 3×4=12 (person) 144 Represents how many groups can be divided into: 144÷12=12 (groups). Because each group has 4 tables, there are 12 groups of tables: 4×12=48 (tables). Because each group has 3 chairs, there are 12 groups of chairs: 3×12=36 (chairs). 22.  (3-1) × 2 = 4 meters, (4 + 1) x 2 = 10 meters 23. There are 14 students, 14×7+6 = 104 books 24. First row:  68-(25-1)×2 = 20, Middle row: (20+68)÷2 = 44, Total rows: 44x25 = 1100 25. Trump's house number = 8 26. Male: 25, Female: 75 27. Total 113 balls 28. Glove: 15 BTC, Socks: 10 BTC, Hat: 10 BTC 29. Sand: 100 kg, Cement: 25 kg 30. Teddy: 9, Christine: 16 Read more interesting posts: Why You need to Buy Bitcoin now? It worth $1,000,000 per Bitcoin soon! Why Buy Bitcoin as Store of Value and not gold, bond or stocks? Why Japanese Convenience Stores are so special? 20 Free Learning Websites to Improve Your...

Here is the answers for the  Part 2: Concept of Number Training B (Question 11-20) 11. 3  21 12. 22 times. 13.（5+1）×5+1 = 31  14.  ×, -, ÷, × | ×, -, ÷, + 15.（30÷6+1）x 2 = 12 flags 16. Total number of sheep is 15. When I first thought of "Half, but no sheep was killed, and there was no remaining" in the title, I deduced that the total must be the base. This question needs to be pushed forward. Assuming that the number of sheep allocated to the eldest daughter is x, the second son is allocated 2x, the eldest son is allocated 4x, and the wife should be allocated 8x. Therefore, the total number of sheep is: x+2x+4x+8x=15x. And because the wife is divided into half of all sheep plus half, then 15x÷2+0.5=8x, x=1. 17.  Because the two ropes are cut to the same length, the difference between the lengths of the two ropes has not changed. The remaining length of rope A is twice that of rope B, which is actually (2-1) times longer than rope B. The length is a standar...

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  Here is the answers for the  Part 1: Concept of Number Training A (Question 1-10) 1. The Half of 8: 0 and 3. The "half" of 8 is 0 for horizontal cuts and 3 for vertical cuts. 2. Staircase to 6th Floor:  Mike lives on the 4th floor and has to climb 3 floors with a total of 54 steps, so each floor has 18 steps; Rose lives on the 6th floor and has to climb 5 floors, so a total of 18×5=90 steps must be climbed. 3. How many eggs does the hen lay: There are two changes in the title, one is the time and the other is the number of chickens. You can keep the time unchanged. From 2.5 hens laying 2.5 eggs in two and a half days, one hen is two and a half days for 1 egg, 10 hens lay 10 eggs in two and a half days. Keep the number of hens unchanged and increase the time from 2.5 days to 10 days, which is 4 times larger, so the number of eggs laid must be multiplied by 4, that is, 10×4=40. So, 10 hens lay 40 eggs in 10 days. 4. The Next 6: 6=1 5. Students in 3 Cla...

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