题目内容

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
=
0.87-0.49 4.9×0.7=
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.
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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