7.4×0.28+0.26+2.6用简便计算?
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2022-12-04
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7.4×0.28+0.26+2.6用咐岁简便局简族计桐弊算?
7.4×0.28+0.26+2.6
=7.4x(0.26+0.02)+0.26+2.6
=7.4x0.02+(7.4+1)x0.26+2.6
=3.7x0.04+(10-1.6)x0.26+2.6
=3.7x0.04+2.6-1.6x0.26+2.6
=(3.7-4x2.6)x0.04+2x2.6
=-6.7x0.04+4x1.3
=4x(1.3-0.067)
=4x1.233
=4.932
7.4×0.28+0.26+2.6
=7.4x(0.26+0.02)+0.26+2.6
=7.4x0.02+(7.4+1)x0.26+2.6
=3.7x0.04+(10-1.6)x0.26+2.6
=3.7x0.04+2.6-1.6x0.26+2.6
=(3.7-4x2.6)x0.04+2x2.6
=-6.7x0.04+4x1.3
=4x(1.3-0.067)
=4x1.233
=4.932
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7.4×0.28+0.26+2.6
=7.4×0.3-7.4×0.02+0.26+2.6
=2.22-0.148+2.86
=(亏铅纳2.22+2.86)销没激卜-0.148
=5.08-0.2+0.052
=4.88+0.052
=4.932
=7.4×0.3-7.4×0.02+0.26+2.6
=2.22-0.148+2.86
=(亏铅纳2.22+2.86)销没激卜-0.148
=5.08-0.2+0.052
=4.88+0.052
=4.932
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简便计算:
7.4×0.28+0.26+2.6=2.072+2.86=4.932
7.4×0.28+0.26+2.6=2.072+2.86=4.932
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