三道数学题(必须简便运算)9*1.7+9.1/1.7-5*1.7+4.5/1.7 3.7*15+21*4.5 98989898*99999999/1010101/11111111
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三道数学题(必须简便运算)9*1.7+9.1/1.7-5*1.7+4.5/1.7 3.7*15+21*4.5 98989898*99999999/1010101/11111111
三道数学题(必须简便运算)
9*1.7+9.1/1.7-5*1.7+4.5/1.7 3.7*15+21*4.5 98989898*99999999/1010101/11111111
三道数学题(必须简便运算)9*1.7+9.1/1.7-5*1.7+4.5/1.7 3.7*15+21*4.5 98989898*99999999/1010101/11111111
9×1.7+9.1÷1.7-5×1.7+4.5÷1.7
=(9-5)×1.7+(9.1+4.5)÷1.7
=4×1.7+13.6÷1.7
=6.8+8
=14.8
3.7×15+21×4.5
=3.7×15+6.3×15
=10×15
=150
98989898×99999999÷1010101÷11111111
=(98989898÷1010101)×(99999999÷11111111)
=98×9
=882
1. (9-5)×1.7+(9.1+4.5)÷1.7=6.8+8=14.8
2. 3.7×15+6.3×15=15×(3.7+6.3)=150
3. (98989898÷ 1010101)×(99999999÷11111111)
=98×9=882
9×1.7+9.1÷1.7-5×1.7+4.5÷1.7
=(9-5)×1.7+(9.1+4.5)÷1.7=4×1.7+13.6÷1.7=14.8
3.7×15+21×4.5=3.7×15+6.3×15=150
98989898×99999999÷1010101÷11111111=(98989898÷1010101)×(99999999÷11111111=882