Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a, 2x9x5x7x4x25
=(2x5)x(4x25)x(9x7)
=10x100x63
=63x1000
=63000
b, 6x14x5x25x3x4
=6x2x7x5x3x(4x25)
=(6x7x3)x(2x5)x100
=122x10x100
=122x1000
=122000
a) \(2\times9\times5\times7\times4\times25\)
\(=\left(2\times5\right)\times\left(4\times25\right)\times\left(9\times7\right)\)
\(=10\times100\times63=63000\)
b) \(6\times14\times5\times25\times3\times4\)
\(=\left(6\times3\right)\times\left(14\times5\right)\times\left(25\times4\right)\)
\(=18\times70\times100=126000\)
a. 125 x 7 x 4 = (125 x 4) x7
= 500 x 7
= 3500
b. (25 x 72) :8 = 1800 : 8
= 225
a) 23*45 -23*35+23*90
= 23* (45-35+90)
= 23*100
= 2300
b) 636/ 6 - 36/ 6
= 600/ 6
= 100
c) 11*607 -607
= 11*607 -607*1
= 607* (11 -1)
= 607*10
= 6070
a.25x34x4=25x4x34=100x34=340
b.128x93+128x7=128x(93+7)=128x100=12800\
c57x63-47x63=(57-47)x63=10x63=630
k cho mình nha
a, (25*4)*34=100*34=34000
b, 128*(93+7)=128*100=128000
c 63*(57-47)=63*10=630
b) 302 x 16 + 302 x 4
= 302 x ( 16 + 4 )
= 302 x 20
= 302 x 2 x 10
= 604 x 10
= 6040
a) 126700 : 350 + 118300 : 350 b) 57150 : 127 = 450
= (126700 + 118300) : 350
= 245000 : 350
= 700
HT
A)126700÷350+118300÷350
=(126700+118300)÷350
=245000÷350
=700
B)57150:127
=450
a, 6257+989+743
=(6257+743)+989
=7000+989
=7989
b, 5798+322+4678
=(4678+322)+5798
=5000+5798
=10798
a,6257+989+743=(6257+743)+989=7000+989=7989
b,5798+322+4678=5798+(322+4678)=5798+5000=10798
a) 213x13+213x17
=213x(13+17)
=213x30
=213x10x3
=2130x3
=6390
b)37x452-27x452
=452x(37-27)
=452x10
=4520
c)4x37x25
=4x25x37
=100x37
=3700
học tốt em nhé
\(a.213\times13+213\times17\)
\(=213\times\left(13+17\right)\)
\(=213\times30\)
\(=6390\)
\(b.37\times452-27\times452\)
\(=452\times\left(37-27\right)\)
\(=452\times10\)
\(=4520\)
\(c.4\times37\times25\)
\(=\left(4\times25\right)\times37\)
\(=100\times37\)
\(=3700\)