2 小数除法
(1)4.27÷0.7
(2)0.225÷0.15
①427÷7 ②0.427÷7 ③42.7÷7
④225÷15 ⑤2.25÷15 ⑥22.5÷15.
利用上题的结论,不计算,直接在横线上填上“>”“<”或“=”.
48.5÷16 48.5 3.06÷0.9 3.06
210÷1.4 210 4.59÷1.02 4.59
7.26÷1 7.26 9.4÷1.2 9.4÷0.12
32.4÷0.4 32.4 78.45÷1 78.
口算:
2.5×0.7×0.8= (2.5+0.9)×0.4= 42÷0.6= 5.6×1.01=
3.9+1.01= 0.42= 4.8t﹣0.2t﹣2t= (5.5﹣5.5)÷3.3=
1.52= 3.3﹣0.7﹣0.3=
2220÷37= 47×67= 74×76=
123123÷1001= 3456×9999= 489+507+505+492+497+509+500
1111.5÷2.5 0﹣1﹣2+3+4﹣5﹣6+7+8﹣…﹣97﹣98+99+100.
直接写出得数.
20×5.5= 0.77+0.33= (0.18+0.9)÷9= ×4÷×4=
0.48+0.2= 4.4÷1.1= 101×1.01﹣101= ÷﹣÷=
看谁算的又对有快,直接写得数.
10.06+4.38= 5.6÷0.8= 1.6×7= 6﹣3.77=
0.24×5= 6÷5= 4.5÷0.15×0= 0.15×20=
(1)0.77+0.33= (2)2.6﹣1.7= (3)7÷1.4= (4)+9=
(5)0.9+99×0.9= (6)13÷2÷13= (7)32÷53×0= (8)÷2÷=
直接写出得数:
0.35+0.45= 150×6= 6+6×4= 0.57+0.9=
4.3÷1000= 0.6﹣0.37= 5÷1000= 0.5×100=
322﹣99= 101×87= 1﹣0.01= 10﹣6.5+3.5=
23×4÷23×4= 9800÷25÷4= 35×25×4= 50﹣20÷5=
2011﹣2012学年五年级(下)期中数学模拟试
(1)0.2×5= (2)25×4= (3)1.25×8= (4)4÷10=
(5)0.45÷0.9= (6)0.56÷7= (7)1.98+0.02= (8)2.75+(1.25﹣0.78)=
看谁算得又对又快.
2.5﹣1.2= 4×0.5= 6.4+2.5= 0÷2.8=
2.5×0.4= 8﹣2.5= 5+5.5= 1÷100=
9﹣8.9= 7.2+2.8= 6.09﹣1.98= 0.4×5=
0×0.1= 2.5÷10= 8.05+5= 8×0.25=
2.35+7.65= 5×2.4= 0.69÷0.03= 3+7.7=
0.2×5﹦ 7.78+2.2= 1.25×0.8= 100×0.1﹦
2.5×0.4×5﹦ 1﹣0.26= 6.6÷0.66= 4÷0.8=
5.37×0= 4.63+5.37= 9.6÷6=
4.7+2.3= 4.5×2= 6.9﹣2.5= 7.2×0.8=
6×3.4= 0.62﹣0.32= 1.4×0.5= 0.75×100=
0.02×0.5= 3.6÷0.3= 6.3÷7= 5.6÷100=
0.75÷0.25= 0.125×8= 4.8÷0.3= 0.96÷2=
0.56÷28= 0.36÷0.4= 0.64÷0.8= 0.72÷3.6=
3.6÷24= 0.8×1.1= 7.2+12.8= 46.7﹣3.8=
12.8÷4= 5.2÷13= 12.5÷5= 1.64÷41=
10÷20= 24÷15= 8.65×10= 0.35×0.6=
3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=
2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=
4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8=
0.56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=
7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8=
1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=
0.22×102= 9.6÷0.8= 5×0.24= 4.5﹣0.05=
3.9÷0.13 16.5÷0.5= 5×0.12= 24×0.5=
4.8×0.5= 2.8+4.2= 0.84÷2.1= 5÷0.25=
7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=
0.56÷0.8= 7.4﹣2.8= 0.18÷0.2= 0.16÷8=
4.5×0.02= 8+7.2= 1.2×30= 0.012×0.2=
7.3×0.3= 9÷6= 3.6÷0.12= 7.8÷0.6=
2÷5= 4.5+5= 0.3÷0.6= 0.96÷0.2=
10.5×0.4= 7.3+0.27= 8×0.125= 0.54÷0.6=
0.61+0.39= 0.56÷28= 10÷20= 4.08÷0.4=
11﹣9.4= 0.8×0.11= 0.72+12.8= 5.6÷0.01=
2.3×100= 0.75×100= 0.108÷2= 10.8÷9=
0.7÷0.8= 16﹣5.07= 4.2×0.4= 0.72×6=
12÷0.5= 5.2×0.4= 12.2÷0.2= 5.6÷100=
0.41+3.7= 0.02×0.5= 7.2﹣0.8= 1.4×0.5=
84÷0.21= 0.75÷0.25= 2.5×16= 0.108÷2=
1.75+32.5= 16﹣5.07= 5.2÷13= 1.64÷41=
1.02×0.2= 0.26×0.3= 8.4×0.02= 1.29×6=
0.8×0.05= 12.6÷0.03= 8.71÷0.1= 21÷0.21=
0.8×0.13= 0.34÷17= 8.08÷0.4= 0.5×2.2=
1.24÷4= 3.27+0.63= 5.02×0.3= 0.3×0.5=
6.4÷4= 7.2÷1.8= 0.7÷0.35= 0.72÷1.44=
0.48÷0.04= 1.25÷2.5= 5.5+55= 16.8÷8=
0.54+2.2= 3.5﹣0.05= 2÷0.02= 0.25×40=
1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=
46.5+52.5= 0.45×102= 1.25×88= 2.64+3.85+1.54=
8×1.25= 5.6÷3.5= 4.2÷0.7÷6= 0.4×8.6×25=
0.27÷0.3= 2.5×101= 0.65×101﹣0.65= 2.6×7÷2.6×7=
我能算得又快又对.
0.25×40= 8.4÷2.1= 0.9×0.5= 0.64÷8= 13.2÷0.1= 1÷0.01=
0.5×0.2= 10.1×2= 9.9×0.1= 1.8+0.2×3= 3×0.125×8= 0.12÷0.3=
用竖式计算:
(1)2.67×1.5 (得数保留一位小数)
(2)0.2223÷0.65 (商精确到百分位)
(3)4.2÷0.18.(商用循环小数表示)
用竖式计算
3.78×3.5= 1.52×0.88=(保留两位小数)验算:
5.25÷2.7=(商用循环小数表示) 1.74÷4.4=(精确到百分位)
在下面的横线上填上“>”“<”或“=“.
756×0.9 156 1×0.94 1 4.25×1.1 4.25
2.85÷0.6 2.85×0.6 20.6÷1.1 20.6 8.1÷0.1 8.1.