问题 解答题
450-140=25÷7=900+238=600-9×8=
90-7×5=26+30-28=48÷(2+4)=780-772=
26+24=80-30=78-26=
5
6
-
1
2
=
(
1
2
+
1
3
+
1
4
) × 24
=
0.25×2.69×4=10-2.87-7.13=
12
7
÷24=
4
5
=
0.87-0.494.9×0.7=
4
5
÷
7
10
=
8
5
 ÷
5
8
=
7
18
÷
5
9
=
1
2
×
1
5
=
2+
4
9
=
(25+4)×4=12.37-3.25-6.75=3/14×6=0.51÷17=
14-7.4=5.2÷1.3=25×12=
3
16
÷
3
16
=
9
26
÷
8
13
=
2.5-2=36-29=120÷4=
300+25=630-30=4×50=15.9+10.8=
26×13=24÷4+56÷4=8-2.5=12×2.5=
2吨50千克=______吨.
答案

450-140=310;25÷7=3
4
7
900+238=1138;600-9×8=528;
90-7×5=55;26+30-28=28;48÷(2+4)=8;780-772=8;
26+24=50;80-30=30;78-26=52;
5
6
-
1
2
=
1
3
(
1
2
+
1
3
+
1
4
) × 24
=26;
0.25×2.69×4=2.69;10-2.87-7.13=0;
12
7
÷24=
1
14
4
5
=3
3
4
0.87-0.49=0.38;4.9×0.7=3.43;
4
5
÷
7
10
=1
1
7
8
5
 ÷
5
8
=2
14
25
7
18
÷
5
9
=
7
10
1
2
×
1
5
=
1
10
2+
4
9
=2
4
9
(25+4)×4=116;12.37-3.25-6.75=2.37;3÷14×6=1
2
7
0.51÷17=0.03;
14-7.4=6.6;5.2÷1.3=4;25×12=300;
3
16
÷
3
16
=1;
9
26
÷
8
13
=
9
16
2.5-2=0.5;36-29=7;120÷4=30;
300+25=325;630-30=600;4×50=200;15.9+10.8=26.7;
26×13=338;24÷4+56÷4=20;8-2.5=5.5;12×2.5=30.
2吨50千克=(2.05)吨

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