问题
解答题
|
答案
①957-420÷60,
=957-7,
=950;
②38+3.4+122+6.6,
=(38+122)+(3.4+6.6),
=160+10,
=170;
③25×(4.41-16.4÷40),
=25×(4.41-0.41),
=25×4,
=100;
④4.8×3.27+5.73×4.8+4.8,
=4.8×(3.27+5.73+1),
=4.8×10,
=48;
⑤(
+5 12
-5 8
)×24,5 6
=
×24+5 12
×24-5 8
×24,5 6
=10+15-20,
=25-20,
=5;
⑥
÷[1-(4 15
-2 3
)],3 5
=
÷[1-4 15
],1 15
=
÷4 15
,14 15
=
.2 7