25×76.8=250×
7.68
7.68
分析:根據(jù)積不變的規(guī)律,一個因數(shù)擴大多少倍,另一個因數(shù)就要縮小相同的倍數(shù)(0除外),積不變,據(jù)此判斷即可得到答案.
解答:解:25×76.8=(25×10)×(76.8÷10)=250×7.68.
故答案為:7.68.
點評:此題主要考查的是積的變化規(guī)律的靈活應(yīng)用.
練習(xí)冊系列答案
相關(guān)習(xí)題

科目:小學(xué)數(shù)學(xué) 來源: 題型:

(1)80.8×0.25-76.44÷7.8
(2)2.8+7.2÷0.2×40
(3)(2.5+1.25)×0.4×8
(4)12.34×100.1-12.34×0.1
(5)(1÷0.2-0.2÷1)÷(2.4×2)
(6)41.8÷[31.52+25.7×(0.76÷1.9)].

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:

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=
59億-58億= (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)]=

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:

脫式計算
①1.5×(0.1÷0.5)+0.18÷0.36
②14.55÷(0.72+4.76×3)
③800-(418+317)÷21×8.9
④494÷19+15×24-125×2
⑤6.25×0.8+3.75÷1.2
⑥231-17×28÷34+43.

查看答案和解析>>

科目:小學(xué)數(shù)學(xué) 來源: 題型:解答題

(1)80.8×0.25-76.44÷7.8
(2)2.8+7.2÷0.2×40
(3)(2.5+1.25)×0.4×8
(4)12.34×100.1-12.34×0.1
(5)(1÷0.2-0.2÷1)÷(2.4×2)
(6)41.8÷[31.52+25.7×(0.76÷1.9)].

查看答案和解析>>

同步練習(xí)冊答案