计算.3.2×0.25- 4 7 ÷4 0.4×(3.85-0.4)÷13.8 15.8- 7 18
计算.3.2×0.25-47÷40.4×(3.85-0.4)÷13.815.8-718+14.2-11188×(38+127)+19271318÷(56+23×38)68...
计算.3.2×0.25- 4 7 ÷4 0.4×(3.85-0.4)÷13.8 15.8- 7 18 +14.2- 11 18 8×( 3 8 + 1 27 )+ 19 27 13 18 ÷( 5 6 + 2 3 × 3 8 ) 68÷[0.5×(7.5-0.7)].
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素颜497
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(1)3.2×0.25- ÷4, = × - × , = - , = ;
(2)0.4×(3.85-0.4)÷13.8, =0.4×3.45÷13.8, =1.38÷13.8, =0.1;
(3)15.8- +14.2- , =(15.8+14.2)-( + ), =30-1, =29;
(4)8×( + )+ , =8× + ×8+ , =3+( + ), =3+1, =4;
(5) ÷( + × ), = ÷( + ), = ÷ , = × , = ;
(6)68÷[0.5×(7.5-0.7)], =68÷[0.5×6.8], =68÷3.4, =20. |
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