题目内容

口算．
199+49=		10-0.01=5+1.4+1.6=2.5×40=
2
3
×
9
10
=		24÷
6
7
=
1
3
+
1
4
=
1
3
÷2÷
1
3
=
199+49=248，10-0.01=9.99，5+1.4+1.6=8，2.5×40=100，
2
3
×
9
10
=
3
5
，		24÷
6
7
=28，
1
3
+
1
4
=
7
12
，
1
3
÷2÷
1
3
=
1
2
．
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相关题目
口算．
68+17=		81-34=80÷4=46÷5=
50-26=44+46=36÷3=4×21=
1300-600=71-24=60×3=1200-500=
180÷60=12×25=0÷90=
4×5÷4×5=0.25×4+4=131+218+269+182=
25×6×4=420÷35=36×5×4=
120÷5÷3=198-75-25=120-20÷5=
59亿-58亿=（1.3+3.5）÷0.6=75÷2.5=
0.45÷1.25÷8=2.5×7.6×4=97.6÷0.02=
8.8-（0.25+0.4）=0.25+87+0.75=0.8-0.35×2=
0.1÷0.01×0.1=9.9+9.9×99=2.7×3.6+6.4×2.7=
720÷8÷9=2.9+5.7+2.1=2-0.16-0.64=
16.7+84.5-16.7=6.8-（3.8+2.9）=9×1.3+9×6.7=
5.5-5.25+5.2=0.8×25-10=42.8×25×4=
7.2+2.8=0.9÷0.01=3.5+7.6=
3×0.2×0.5=0.96÷0.3=1.5×0.4=
7÷0.25=2.5×0.7×0.8=8-2.5=
16÷1.6=5.6×1.01=8×（2.5+0.25）=
0.36+0.64=64.32÷16=72.8÷0.8=
8.4×0.2+1.6×0.2=8.4÷4.2=0.05×0.8=
2.56-0.37=1.23×3=25×0.8×0.5=
12×2.5=3.2÷1.6=3.5+3.5×3=
19.6÷2=8.8÷2.2=3.9+2.03=
7.2×0.3+2.8×0.3=13.8+9.9=2.4×2.5=
0.75×4=（1.5+0.25）×4=4.2÷0.1=
4.2÷3.5=2.14-0.9=27+456+73=
12÷0.3=2.87÷0.7=13÷4=
24÷4+56÷4=2.1×0.3÷2.1=2.3-0÷8.1=
1.37-1.37÷1.37=4.4÷（5×0.2）=7×1.3=
0.96÷0.06=0.36×0.3=0.35÷0.7=
13.65÷13=4×0.8×0.25×1.25=13+0.7÷0.7=
7.05×23.7+7.05×76.3=0.125×3.2×2.5=（12+23.1÷0.75）×0.4-5.12=
728+199=637-201=16×25=
1.6×[（12-7.2）÷（0.84÷2.1）]=
直接写出得数：
225+475=19.3-2.7=
1
2
+
3
4
=		1
3
4
÷1.75=
3
4
×
2
3
=
5.1÷0.01=
4
7
×5.6=		8.1-6
1
2
=		4.1+1÷2=（3.5%-0.035）÷2
1
4
=
口算
（1）125+99=；（2）7-
5
6
=；（3）2.5×0.4=；（4）1-1÷8=；（5）910÷70=；（6）
1
2
+
1
3
=；（7）1.6×
5
8
+
3
8
=
净含量就是指除去包装袋以外物品重量．______．（判断对错）
被减数、减数与差的和是180，减数是差的2倍，减数是______．
836+164=351-42=25×4=72÷8=
0×123=
3
5
-
1
5
=		1-
2
7
=		5×7+5=
16÷4-4=8-6÷2=
新河小学有男生880人，有女生790人，男生比女生多多少人？

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