(Maths Olympiad 《Tricks in Addition and Subtraction》 Pr3&4 Question #4)Answer the following questions.(1)420-102-98.(2)240-104-96.(3)325-10-20-80-90.(4)400-90-80-20-10-5.(5)235-15-25-75-85.(6)200-1-2-3-4-5.(7).(8).(9)800-10-20-30-40-50-60-70-80-90. ...
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(Maths Olympiad 《Tricks in Multiplication》 Pr2&3 Question #19) Compute the following. (1) 19* 11. (2) 24* 11. (3) 76* 101. (4) 53* 101. 相关知识点: 试题来源: 解析 (1) 209. (2) 264. (3) 7676. (4) 5353. (1) 19* 11=190+19=209. (2) 24* 11=240+24=264. (3...
(Maths Olympiad 《Tricks in Addition and Subtraction》 Pr3&4 Question #5)Answer the following questions.(1)375+286+125+714.(2)728+140+272.(3)37+97+3997+99.(4)71+69+68+73+74.(5)1897+128-597.(6).(7)1290-164-736.(8)1330-288-342.(9)843+78-43.(10).(11).(12)847-578+3...
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(Maths Olympiad《Tricks in Addition and Subtraction》 Pr3&4Question #5)Answer the following questions.(1)375+286+125+714(2)728+140+272(3)37+97+3997+99(4)71+69+68+73+74(5)1897+128-597(6)728-(28+320)(7)1290-164-736(8)1330-288-342(9)843+78-43(10)528-(186+328)(11)564-...
(Maths Olympiad 《Tricks in Addition and Subtraction》 Pr3&4 Question #4)Answer the following questions.(1)120−117+116−113+112−109+⋯+100−97.(2)145−141+140−136+135−131+⋯+95−91.(3)800−10−20−30−40−50−60−70−80−90. 答案 (1)18.(2)44...
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(Maths Olympiad 《Tricks in Multiplication》 Pr2&3 Question #4)Compute the following.(1).(2).(3).(4). 答案 (1)2250.(2)10100.(3)6000.(4)4750.(1)~~~=2250.(2)~~~=100+10000~~~=10100.(3)~~~=5000+1000~~~=6000.(4)~~~=5000-250~~~=4750.相关推荐 1(Maths Olympiad 《...