问题
解答题
脱式计算.
|
答案
(1)24+16×11÷8,
=24+176÷8,
=24+22,
=46;
(2)1.25×32×2.5,
=1.25×4×8×2.5,
=(1.25×8)×(2.5×4),
=10×10,
=100;
(3)(2.8+3.85÷3.5)×0.2,
=(2.8+1.1)×0.2,
=3.9×0.2,
=0.78;
(4)
+4 7
-1 5
+3 7
,4 5
=(
-4 7
)+(3 7
+1 5
),4 5
=
+1,1 7
=1
;1 7
(5)10.9-(
+9.6÷4),2 5
=10.9-(
+2.4),2 5
=10.9-2.8,
=8.1;
(6)
÷[1-(5 6
+3 4
)],1 12
=
÷[1-5 6
],5 6
=
÷5 6
,1 6
=5.