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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