36×12.5 4.3×12.5简便方法计算
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解原式=12.5*(36+4.3)
=12.5*40.3
=12.5*(40+0.3)
=500+3.75
=503.75
=12.5*40.3
=12.5*(40+0.3)
=500+3.75
=503.75
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36ⅹ12.5+.4.3ⅹ12.5
=(36+4.3)ⅹ12.5
=(40+0.3)x12.5
=40x12.5+0.3ⅹ12.5
=500+3.75
=503.75
=(36+4.3)ⅹ12.5
=(40+0.3)x12.5
=40x12.5+0.3ⅹ12.5
=500+3.75
=503.75
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解:36×12.5=9×4×12.5
=9x(4×12.5)
=9×50
=450
4.3X12.5
=(4十0.3)×12.5
=4×12.5十0.3x12.5
=50+3.75
=53.75
=9x(4×12.5)
=9×50
=450
4.3X12.5
=(4十0.3)×12.5
=4×12.5十0.3x12.5
=50+3.75
=53.75
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36×12.5
=(4×8+4)×12.5
=12.5×8×4+12.5×4
=400+50
=450
4.3×12.5
=(4+0.3)×12.5
=4×12.5+0.3×12.5
=50+3.75
=53.75
=(4×8+4)×12.5
=12.5×8×4+12.5×4
=400+50
=450
4.3×12.5
=(4+0.3)×12.5
=4×12.5+0.3×12.5
=50+3.75
=53.75
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