
混合运算 (你能用简便方法计算吗?) 5-(4.19-2.83) 1.39+0.72+0.61+3.28 8-3.7
混合运算(你能用简便方法计算吗?)5-(4.19-2.83)1.39+0.72+0.61+3.288-3.7-6.38.28-(1.28+3.7)...
混合运算 (你能用简便方法计算吗?) 5-(4.19-2.83) 1.39+0.72+0.61+3.28 8-3.7-6.3 8.28-(1.28+3.7)
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(1)5-(4.19-2.83), =5-1.36, =3.64; (2)1.39+0.72+0.61+3.28, =(1.39+0.61)+(0.72+3.28), =2+4, =6; (3)8-3.7-6.3, =8-(3.7+6.3), =8-10, =-2; (4)8.28-(1.28+3.7), =8.28-1.28-3.7, =7-3.7, =3.3. |
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