7
10
×
12
7
=
1.25×16×8=
1
3
÷
1
8
=
1
4
+
1
3
)×4=
2
5
+
1
2
=
5
9
-
1
3
=
8
9
÷4=
8
9
=
0.5×0.4= 4÷0.25= 3÷4= 8.1÷9=
2.5×4= 6-0.025= 3.6+6.3= 0.05×4=
3.5×0= 0÷3.5= 0.9×0.3= 1×0.06=
分析:根據(jù)分?jǐn)?shù)、小數(shù)加減乘除法的計(jì)算法則進(jìn)行計(jì)算即可.
解答:解:
7
10
×
12
7
=1
1
5
1.25×16×8=160
1
3
÷
1
8
=2
2
3
1
4
+
1
3
)×4=2
1
3
2
5
+
1
2
=
9
10
5
9
-
1
3
=
2
9
8
9
÷4=
2
9
8
9
=4
1
2
0.5×0.4=0.2 4÷0.25=16 3÷4=0.75 8.1÷9=0.9
2.5×4=10 6-0.025=5.975 3.6+6.3=9.9 0.05×4=0.2
3.5×0=0 0÷3.5=0 0.9×0.3=0.27 1×0.06=0.06
點(diǎn)評(píng):本題主要考查了分?jǐn)?shù)、小數(shù)加減乘除法的計(jì)算法則的運(yùn)用.
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