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4.85%1.9 5.15简便运算

4.85-5/9+5.15-4/9=可以简便计算就简便计算回答:4.85-5/9+5.15-4/9 =4.85+5.15-(5/9+4/9) =10-1 =9

简便运算.4.85-59+5.15-49719÷115+1219×511.(1)4.85-59+5.15-49=(4.85+5.15)-(59+49)=10-1=9(2)719÷115+1219×511=719

简便计算4.85-9分之5+5.15-9分之4解方程8分之x-4.5+5.5=回答:先算加再算减 (4.85+5.15)-(5/9+4/9)=9x/8+1=10 x=72

4.8x1.25x15简便运算4.8x1.25x15 =4×1.25×1.2×15 =5×1.2×15 =6×15 =90

4.85x9.9简便计算?回答:4.85*10-4.85*0.1

4.85×9.9+0.485能简便吗4.85×9.9+0.485=0.485×99+0.485×1=0.485×(99+1)=0.485×100=48.5

13.65+4.85+5.15的简便运算。=(4.85+5.15)-(), =10-1, =9; (2)+ ×(- ) = + , = + , = ; (3)5×(+ )

5年级分数简便计算( + + )×72 93.5÷3 16÷2.5 ( ) ( ) ( )三、用简便方法计算。(65分)1125-997 998+1246+9989 (8700+870+

关于数学的问题,简便运算490/(1-(1/2+1/5))=490/(1-(5/10+2/10))=490/(1-7/10)=490/(3/10)=4900/3 ((5.44-3.5)/0.4)*1.2=

4.85-5/9+5.15-4/9=可以简便计算就简便计算4.85-5/9+5.15-4/9=4.85+5.15-(5/9+4/9)=10-1=9

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