36 x 5 + 72 x 2 - 216 + 144
Tính bằng cách thuận tiện nhất 36 x 5 + 72 x 2 - 216 + 144
\(36\text{×}5+72\text{×}2-216+144\)
\(=36\text{×}5+36\text{×}2\text{×}2-36\text{×}6+36\text{×}4\)
\(=36\text{×}5+36\text{×}4-36\text{×}6+36\text{×}4\)
\(=36\text{×}\left(5+4-6+4\right)=36\text{×}7=252\)
36 nhân 5 + 72 nhân 2 - 216+144.tính bằng cách nhanh nhất
=180+144-216+144
=144+(216-180)
=144+36
=180
Đ/S : 180
36 x 5 + 72 x 2 - 216 + 144
= 36 x 5 + 36 x 2 x 2 - 36 x 6 + 36 x 4
= 36 x ( 5 + 2 + 2 - 6 + 4 )
= 36 x 5
= 180
tinh nhanh 72 x 19 + 36 x 6 x 10 + 144 x 40 - 72 x 29
`= 72 xx 19 + 36 xx 2 xx3 xx 10 + 72 xx 80 - 72 xx 29`
`= 72 xx(19 + 30 - 29 + 80)`
`= 72 xx 100`
`= 7200`
\(=72.19+36.2.3.10+72.2.40-72.29\)
\(=72.19+72.30+72.80-72.29\)
\(=72.\left(19+30+80-29\right)\)
\(=72.100=7200\)
72 x 36 x 2 + 24 x 3 + 18 x 4 + 12 x 6 + 144
1) 25.4.5.27.2
2) 463 + 318 + 317
3) 28.64 + 28.35 + 28
4) 1+2+3+...+ 100
5) ( 1200 + 60 ) : 12
6) 25 + 28 - 7 + 32 - 8 -5 - 2 +17
7) 36 .5 + 72 .2 - 216 + 144
8) ( 45.46 + 47.48 ) . ( 51.52 -49.48 ) . (45.128 - 90.64 ) . ( 1995.1996 + 1997 . 1998 )
Ai trả lời được nói gì mình cũng nghe
Tìm x:
56/x=7 72/x=9 68*x=408 36*x=216
a,
52 x 378 + 49 x 387 - 387
b,
72 x 19 + 36 x 6 x 10 + 144 x 40 - 72 x 29
387×(52+49)-387
387×101-387
39087-387
38700
1368+216×10+576+2088
1368+2160+576-2088
3528+576-2088
4104-2088
2016
a/ 52.378+49.378-378
= 378 . (52+49 -1)
= 378 .100
= 37800
b/ 72 .19+36 .6.10+144 /40 -72.29
= 72 . 19 + 216 .10+576 .10 -72.29
= 72 .(19-29) +(216+576).10
= -72 .10 +792 .10
=720.10
= 7200
72 + 36 x 2 + 24 x3 + 18 x4 +12 x6 + 144 / 9,8 + 8,7 + 7,6 +... +2,1 -1,2 -2,3 +3,4 -8,9
ko ai muốn kb đâu hehe