(2.5+0.125)*3.2簡便運算怎麼算?要全部過程! 可以告訴最後答案是8.4 快者再加5分
(2.5+0.125)*3.2
=2.5*3.2+0.125*3.2
=2.5*4*0.8+0.125*8*0.4
=10*0.8+1*0.4
=8+0.4
=8.4
5.32+2.06+19.4+1.84+7.68簡便計算
5.32+2.06+19.4+1.84+7.68
=5.32+7.68+2.06+1.84+19.4
=13+3.9+19.4=13+23.3=36.3
如何簡便計算2.3×72+77×7.2
2.3×72+77×7.2
=23×7.2+77×7.2
=7.2*(23+77)
=7.2*100
=720
用簡便計算:8.7*0.72+0.28*8.7
8.7*0.72+0.28*8.7
=8.7×﹙0.72+0.28﹚
=8.7
0.28*0.72+0.72*0.72簡便計算
0.28×0.72+0.72×0.72
=0.72×(0.28+0.72)
=0.72
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77*4.8-72*4.8怎麼簡便計算
77*4.8-72*4.8
=(77-72)*4.8
=5*4.8
=24;
簡便運算:7.6/5.4/19*5.4=()
7.6÷5.4÷19×5.4
=7.6×1/19×1/5.4×5.4(全部變成乘法約分)
=0.4
0.7+(-4分之11)+0.125+(-7分之5)+(-4又8分之1)的計算過程
0.75+(-4分之11)+(+0.125)+(-7分之5)+(-4又8分之1) =3/4-11/4+1/8-5/7-33/8 =(3/4-11/4)+(1/8-33/8)-5/7 =-2-4-5/7 =-6又5/7
0.7×11分之3-6.6×7分之3-1.1×7分之3+0.7×11分之8 簡便計算,
您好:0.7×11分之3-6.6×7分之3-1.1×7分之3+0.7×11分之8=0.7x(3/11+8/11)-3/7x(6.6+1.1)=0.7x1-3/7x7.7=0.7-3.3=-2.6 如果本題有什麼不明白可以追問,如果滿意請點選右下角“採納為滿意回答”如果有其他問題請採...
0.625==40分之()=40÷()=()
25 64 8分之5
10比( )=40分之( )=40÷( )=0.625 ( )裡添幾? 10比( )=40分之( )=40÷( )=0.625
16 25 64
8×1.4×0.5×0.125簡便計算
8×1.4×0.5×0.125
=8×0.125×0.7×2×0.5
=1×0.7×1
=0.7
1又2/3*【7又5/6+(4.125—4又1/8)—4又5/6】的簡便計算怎麼做
拆開來做.7又5/6 = 7 + 5/60.125 = 1/8 所以 (4.125—4又1/8)= 04又5/6 = 4 + 5/6所以 【7又5/6+(4.125—4又1/8)—4又5/6】 = 7 + 5/6 + 0 - 4 - 5/6 = 31又2/3* 3 = 1*3 + 2/3 *3 = 3 + 2 = 5...
0.36層0.25簡便計算
0.36×0.25=0.9X0.4X0.25=0.9X0.1
簡便計算:45*28+15*16
45*28+15*16
=15*84+15*16
=15*(84+16)
=15*100
=1500
17×36-650÷13,(405÷15-13)×16,910-(86+14×28,372-(17×14+42),(15+23)×32÷2,簡便運算 50分懸賞
17×36-650÷13
=17×4×9-50
=68×9-50
=612-50
=462
(405÷15-13)×16
=(405÷5÷3-13)×16
=(27-13)×16
=14×2×8
=224
計算:10/3-28/15+【4.375*(3-9/7)】 12.5*(36-36/5)/3.6
10/3-28/15+(4.375*(3-9/7))=50/15-28/15+35/8*(21/7-9/7)=22/15+35/48*12/7=22/15+15/2=269/1512.5*(36-36/5)/3.6=25/2*(180/5-36/5)/(18/5)=25/2*144/5*5/18=100
能簡便算的就簡便算 3/4+8.36+1/4+16/28【能簡便算麼
3/4+8.36+1/4+16/28
=3/4+1/4+8.36+4/7
=1+8.36+4/7
=9.36+4/7
=9+9/25+4/7
=9+63/175+100/175
=9又163/175
(3.5+(15-1.5))*7.6怎麼簡便計算? 急急!!!!!!!!!!!!!!!!!!!!!!!!!!1
(3.5+(15-1.5))*7.6
=(3.5-1.5+15)*7.6
=17*(7+0.6)
=119+10.2
=129.2
簡便計算;15.36-3又7分之2-6又7分之5
15.36-(3+2/7)-(6+5/7)
=15.36-(3+6+2/7+5/7)
=15.36-10
=5.36