要乘法结合律、交换律、分配律(50道题)
120-36×4÷18+35 (58+37)÷(64-9×5) (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 6-1.6÷4= 5.38+7.85-5.37= 7.2÷0.8-1.2×5= 6-1.19×3-0.43= 6.5×(4.8-1.2×4)= 5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 12×6÷7.2-6 0.68×1.9+0.32×1.9 58+370)÷(64-45) 420+580-64×21÷28 136+6×(65-345÷23) 18.1+(3-0.299÷0.23)×1 (6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 3.2×6+(1.5+2.5)÷1.6 0.68×1.9+0.32×1.9 10.15-10.75×0.4-5.7 5.8×(3.87-0.13)+4.2×3.74 32.52-(6+9.728÷3.2)×2.5 [(7.1-5.6)×0.9-1.15] ÷2.5 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 12×6÷7.2-6 33.02-(148.4-90.85)÷2.5
4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)
3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2
3.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.47
5.27+2.86-0.66+1.63 13.35-4.68+2.65 47.8-7.45+8.8
0.398+0.36+3.64 15.75+3.59-0.59+14.25 42.5-(6.07+1.13)
73.8-1.64-13.8-5.36 66.86-8.66-1.34 0.25×16.2×4
3.72×3.5+6.28×3.5 36.8-3.9-6.1 2 5.48-(9.4-0.52)
4.8×7.8+78×0.52 3.6×102 6.4×0.25+3.6÷4
32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8
4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09
4.2÷3.5 320÷1.25÷8 18.76×9.9+18.76
3.52÷2.5÷0.4 4.78÷0.2+3.44 3.9-4.1+6.1-5.9
0.49÷1.4 1.25×2.5×32 3.6-0.6×2
3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4)
5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7
4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44
9999+99.99+999.9+9.999
4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)
3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2
3.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.47
5.27+2.86-0.66+1.63 13.35-4.68+2.65 47.8-7.45+8.8
0.398+0.36+3.64 15.75+3.59-0.59+14.25 42.5-(6.07+1.13)
73.8-1.64-13.8-5.36 66.86-8.66-1.34 0.25×16.2×4
3.72×3.5+6.28×3.5 36.8-3.9-6.1 2 5.48-(9.4-0.52)
4.8×7.8+78×0.52 3.6×102 6.4×0.25+3.6÷4
32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8
4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09
4.2÷3.5 320÷1.25÷8 18.76×9.9+18.76
3.52÷2.5÷0.4 4.78÷0.2+3.44 3.9-4.1+6.1-5.9
0.49÷1.4 1.25×2.5×32 3.6-0.6×2
3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4)
5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7
4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44
4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)
3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2
3.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.47
5.27+2.86-0.66+1.63 13.35-4.68+2.65 47.8-7.45+8.8
0.398+0.36+3.64 15.75+3.59-0.59+14.25 42.5-(6.07+1.13)
73.8-1.64-13.8-5.36 66.86-8.66-1.34 0.25×16.2×4
3.72×3.5+6.28×3.5 36.8-3.9-6.1 2 5.48-(9.4-0.52)
4.8×7.8+78×0.52 3.6×102 6.4×0.25+3.6÷4
32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8
4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09
4.2÷3.5 320÷1.25÷8 18.76×9.9+18.76
3.52÷2.5÷0.4 4.78÷0.2+3.44 3.9-4.1+6.1-5.9
0.49÷1.4 1.25×2.5×32 3.6-0.6×2
3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4)
5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7
4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44
9999+99.99+999.9+9.999
4.02+5.4+0.98 5.17-1.8-3.2 13.75-(3.75+6.48)
3.68+7.56-2.68 7.85+2.34-0.85+4.66 35.6-1.8-15.6-7.2
3.82+2.9+0.18+9.1 9.6+4.8-3.6 7.14-0.53-2.47
5.27+2.86-0.66+1.63 13.35-4.68+2.65 47.8-7.45+8.8
0.398+0.36+3.64 15.75+3.59-0.59+14.25 42.5-(6.07+1.13)
73.8-1.64-13.8-5.36 66.86-8.66-1.34 0.25×16.2×4
3.72×3.5+6.28×3.5 36.8-3.9-6.1 2 5.48-(9.4-0.52)
4.8×7.8+78×0.52 3.6×102 6.4×0.25+3.6÷4
32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8
4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09
4.2÷3.5 320÷1.25÷8 18.76×9.9+18.76
3.52÷2.5÷0.4 4.78÷0.2+3.44 3.9-4.1+6.1-5.9
0.49÷1.4 1.25×2.5×32 3.6-0.6×2
3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4)
5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7
4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44
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第1个回答 2010-01-31
32+4.9-0.9 4.8-4.8×0.5 (1.25-0.125)×8
4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09
4.2÷3.5 320÷1.25÷8 18.76×9.9+18.76
3.52÷2.5÷0.4 4.78÷0.2+3.44 3.9-4.1+6.1-5.9
0.49÷1.4 1.25×2.5×32 3.6-0.6×2
3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4)
5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7
4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44
4.8×100.1 56.5×9.9+56.5 7.09×10.8-0.8×7.09
4.2÷3.5 320÷1.25÷8 18.76×9.9+18.76
3.52÷2.5÷0.4 4.78÷0.2+3.44 3.9-4.1+6.1-5.9
0.49÷1.4 1.25×2.5×32 3.6-0.6×2
3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4)
5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7
4.36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44
第2个回答 2010-01-30
乘法结合律:
35*25*4 52*125*8 99*25*4 26*25*4 35*25*4 15*25*4
98*25*4 54*25*4 65*125*8 54*25*4 26*4*25 85*125*4
乘法交换律:
25*9*4 125*6*8 4*65*25 8*254*125 125*698758*4
乘法分配律:
99*1+99*99 69*60+69*39+69本回答被提问者采纳
35*25*4 52*125*8 99*25*4 26*25*4 35*25*4 15*25*4
98*25*4 54*25*4 65*125*8 54*25*4 26*4*25 85*125*4
乘法交换律:
25*9*4 125*6*8 4*65*25 8*254*125 125*698758*4
乘法分配律:
99*1+99*99 69*60+69*39+69本回答被提问者采纳
第3个回答 2010-01-29
问题呢?
第4个回答 2010-01-29
买书来参考题目