早教吧作业答案频道 -->数学-->
用喜欢的方法计算下面各题.2.8×4.5+5.5×2.8930÷5÷0.6(2.25+27.75÷1.5)×1.612.5×2.5×3.23.5×0.99(3.168+1.9)÷(10-9.44)
题目详情
用喜欢的方法计算下面各题.
2.8×4.5+5.5×2.8 | 930÷5÷0.6 | (2.25+27.75÷1.5)×1.6 |
12.5×2.5×3.2 | 3.5×0.99 | (3.168+1.9)÷(10-9.44) |
▼优质解答
答案和解析
①2.8×4.5+5.5×2.8
=2.8×(4.5+5.5)
=2.8×10
=28
②930÷5÷0.6
=930÷(5×0.6)
=930÷3
=310
③(2.25+27.75÷1.5)×1.6
=(2.25+18.5)×1.6
=20.75×1.6
=33.2
④12.5×2.5×3.2
=12.5×2.5×(0.8×4)
=(12.5×0.8)×(2.5×4)
=10×10
=100
⑤3.5×0.99
=3.5×(1-0.01)
=3.5×1-3.5×0.01
=3.5-0.035
=3.465
⑥(3.168+1.9)÷(10-9.44)
=5.068÷0.56
=9.05
=2.8×(4.5+5.5)
=2.8×10
=28
②930÷5÷0.6
=930÷(5×0.6)
=930÷3
=310
③(2.25+27.75÷1.5)×1.6
=(2.25+18.5)×1.6
=20.75×1.6
=33.2
④12.5×2.5×3.2
=12.5×2.5×(0.8×4)
=(12.5×0.8)×(2.5×4)
=10×10
=100
⑤3.5×0.99
=3.5×(1-0.01)
=3.5×1-3.5×0.01
=3.5-0.035
=3.465
⑥(3.168+1.9)÷(10-9.44)
=5.068÷0.56
=9.05
看了 用喜欢的方法计算下面各题.2...的网友还看了以下:
口算0×29=759-359=420÷60=70×800=528-0=28×5=327+673=0 2020-04-07 …
脱式计算.(能简算的要简算)(1)14+2.25-0.25+7.75(2)3÷27+79+19(3 2020-04-07 …
0.125×8﹦1.8×40=2.5-3.6÷1.8=360+90=3.2×50=3.2×0.5= 2020-04-08 …
1.20米比()米少25%2.比1.20米比()米少25%2.比20米多25%是()米3.20米比 2020-04-27 …
一个三位数除以4的商,与25乘2的积相等,这个数是多少1 2020-05-13 …
(2x^4-4x^3y-x^2y^2)-2(x^4-2x^3y-y^3)+x^2y^2的值,其中x 2020-05-14 …
(1)原式=4.25×4×5.24/4+1.52/4×4×2.25=17×1.31+0.38×9= 2020-05-16 …
解方程:X+2.25%X-2.25%X*5%*1解方程:X+2.25%X-2.25%X*5%*1= 2020-05-16 …
观察3^2=9=4+5,则有3^2+4^2=5^2;5^2=25=12+13,则有5^2+12^2 2020-05-17 …
把下列问题和正确算式用线连起来小红有故事书25本,小丽的比小红的3倍少2本,小明的比小红的2倍多2 2020-06-03 …