7.02×900×0.6
0.035÷0.7÷0.5
13.6-13.6×0.7
5.62+3.1×0.6+3.38
(25-1.25×5)÷2.5
8.1×0.3+1.8×0.3+0.03.
分析:(1)是同級(jí)運(yùn)算,按照從前向后的順序進(jìn)行計(jì)算;
(2)根據(jù)除法的性質(zhì),進(jìn)行簡(jiǎn)算;
(3)運(yùn)用乘法分配律簡(jiǎn)算;
(4)、(5)按照四則混合運(yùn)算的運(yùn)算順序進(jìn)行計(jì)算;
(6)先把0.03轉(zhuǎn)化為0.3×0.1,再運(yùn)用乘法分配律簡(jiǎn)算.
解答:解:7.02×900×0.6,
=6318×0.6,
=3790.8;

0.035÷0.7÷0.5,
=0.035÷(0.7×0.5),
=0.035÷0.035,
=1;

13.6-13.6×0.7,
=13.6×(1-0.7),
=13.6×0.3,
=4.08;

5.62+3.1×0.6+3.38,
=5.62+1.86+3.38,
=5.62+3.38+1.86,
=9+1.86,
=10.86;

(25-1.25×5)÷2.5,
=18.75÷2.5,
=7.5;

8.1×0.3+1.8×0.3+0.03,
=8.1×0.3+1.8×0.3+0.3×0.1,
=0.3×(8.1+1.8+0.1),
=3.
點(diǎn)評(píng):此題是考查四則混合運(yùn)算,要仔細(xì)觀(guān)察算式的特點(diǎn),靈活運(yùn)用一些定律進(jìn)行簡(jiǎn)便計(jì)算.
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:

22×40= 9+14= 120÷6= 300+400= 56÷7=
46+24= 15+15= 60×30= 78+12= 0÷2=
270-30= 15×20= 1600-900= 11×7= 50+780=
25+1= 27÷3= 32×3= 72+72= 10×110=
200×30= 81÷9= 60×50= 0÷9= 36÷9=
20-5= 900×200= 83-9= 25×2= 120+300=
2
8
+
5
8
=
83+9= 8+68= 40÷5= 21×4=
37-37= 39+6= 90÷9= 0+17= 100-80=
7×4=
2
3
+
1
3
=
12×300= 32-22= 12×3=
62-13= 26÷2=
3
7
+
4
7
=
24÷2=
8
12
-
5
12
=
63+11= 28+02= 49-12= 5200-700=
9
10
-
5
10
=
4
5
-
4
5
=
56÷8+3= 5+12= 0×4÷2= 26-5×4=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:

脫式計(jì)算
6.25-40÷16×2.5                        
1.8×0.2+2.2×25%
2700×(506-499)÷900                  
33.02-(148.4-90.85)÷2.5
18.1÷(3-0.299+0.23)×1.

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來(lái)源: 題型:解答題

7.02×900×0.6
0.035÷0.7÷0.5
13.6-13.6×0.7
5.62+3.1×0.6+3.38
(25-1.25×5)÷2.5
8.1×0.3+1.8×0.3+0.03.

查看答案和解析>>

同步練習(xí)冊(cè)答案