早教吧作业答案频道 -->数学-->
合理、灵活地计算.14.15-(778-61720)-2.1251837×25+237×195(111+999)÷[56×(37-38)]6.45×0.75+4.55×75%-3
题目详情
合理、灵活地计算. 14.15-(7
(111+999)÷[56×(
6.45×0.75+4.55×75%-
|
▼优质解答
答案和解析
(1)14.15-(7
=14.15-7
=(14.15+6.85)-(7.875+2.125), =21-10, =11; (2)
=
=(
=1×
=
(3)(111+999)÷[56×(
=1110÷[56×
=1110÷(24-21), =1110÷3, =370; (4)6.45×0.75+4.55×75%-
=6.45×0.75+4.55×0.75-0.75×1, =(6.45+4.55-1)×0.75, =10×0.75, =7.5. |
看了合理、灵活地计算.14.15-...的网友还看了以下:
直接写得数.2.8÷0.4=38+38=0.21×0.3=811-511=0.42÷0.6=1.2 2020-04-07 …
直接写得数.4.8÷0.8=7.5-4.5=5.7+4.3=0.75÷15=1÷0.25=1.2× 2020-04-07 …
直接写出得数:35.6÷6.9≈8.1÷3×2=511×33=15%+25%=25+35×2=0. 2020-04-07 …
三道计算题,快1-{1-[1-16/5*(--5/16)]*3}/(-1)2-[1-(1/2*2/ 2020-06-02 …
已知√2=1.414,√3=1.732,求(√0.5-2√1/3)-(√1/8-√75)的值.(精 2020-06-06 …
数学门诊.(把不对的改正过来)(1)1.7×0.31+0.69×1.7=1.7×(0.31+0.6 2020-06-22 …
计算(1)3−1−(38−4)÷(−2)2(2)a×a3+2(a9÷a5)-(2a2)2(3)(x 2020-07-09 …
计算下面各题,能简算的要简算,并写出简算过程.(1)179+54+321(2)13×14×125× 2020-07-18 …
1.02-0.43=1.25×8=(0.18+1910)÷9=758-238=6.5×4×15=( 2020-07-19 …
4.3÷1.38.4÷1.3-2.3÷1.3如果可以,怎么巧 2020-07-29 …