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1.35除以(1.35乘以0.8)简便脱式计算

1.35- 0.8-0.49 =1.35-1.29 =0.06 1.35 +0.8-0.49 =2.15-0.49 =1.66

4.2×(1.25乘以0.8) =4.2x(1.25x0.8) =4.2x1 =4.2

0.8×1.2÷0.8×1.2 =(0.8÷0.8)×(1.2×1.2) =1×1.44 =1.44

(1)12.53-1.35×2-9.3,=12.53-2.7-9.3,=12.53-(2.7+9.3),=12.53-12,=0.53;(2)0.8÷(4-3.75)÷0.1,=0.8÷0.25÷0.1,=3.2÷0.1,=32;(3)45+1115+310,=2430+2230+930,=116;(4)7-(34-25),=7-720,=61320;(5)1112+58+38+112,...

①600-480÷12=600-40,=560;②9×715-415÷19=9×715-415×9,=(715-415)×9,=15×9,=95;③(80-9.8)×0.6-2.12=70.2×0.6-2.12,=42.12-2.12,=40;④35×(1-35)÷27=35×25×72,=49;⑤3÷[514×(34-25)]=3÷[514×720],=3÷18,=24;⑥(1-511)×(112+...

0.125×3/4+1/8×8.25+12.5% =1/8×(3/4+8.25+1) =1/8×10 =1.25

56×8+56×8脱式计算 =448x2 =896

(1)12.53-1.35×2-9.3,=12.53-2.7-9.3,=12.53-(2.7+9.3),=12.53-12,=0.53;(2)0.8÷(4-3.75)÷0.1,=0.8÷0.25÷0.1,=3.2÷0.1,=32;(3) 4 5 + 11 15 + 3 10 ,= 24 30 + 22 30 + 9 30 ,= 11 6 ;(4)7-( 3 4 - 2 5 ),=7- 7 20 ...

(1)97÷1+35.6+0×6 =97+35.6+0,=132.6;(2)1375+450÷15×25=1375+30×25,=1375-750,=625;(3)[4.5+(13× 3 8 +13× 3 8 )]÷ 5 3 =[4.5+(13× 3 8 ×2)]÷ 5 3 ,=[4.5+9.75]÷ 5 3 ,=14.25× 3 5 ,=8.55;(4)48× 9 16 +48× 7 16 +48×8 =...

34×3.535-3.5×34.34 =34×3.5×1.01-3.5×34×1.01 =0 8+89+899+8999+89999 =9+90+900+9000+90000-5 =99999-5 =99994 0.67×2.1+0.018×21+8.5×0.79 =0.67×2.1+0.18×2.1+8.5×0.79 =(0.67+0.18)×2.1+8.5×0.79 =0.85×2.1+0.85×7.9 =0.85×(2.1+7.9) =...

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