456/2.18+456/3-102
Tính nhanh
58.42+32.8+5.16
(42.43+43.57+43)-360:4
(372-19.4)+(981:9-13)
456:2.18+456:3-102
a) (42 x 43 + 43 x 57 + 43) - 360 : 4
= 43 x ( 42 x 57) + 43 - 360 :4
= 43 x 99 + 43 - 90
= 4257 + 43 - 90
= 4300 - 90
= 4210
b) (372 - 194 x 4) + (981 : 9 - 13)
= (372 - 776) + (109 - 13)
= -404 + 96
= -308
c) 456 : 2 x 18 + 456 : 3 - 102
= 228 x 18 + 152 - 102
= 4104 + 152 - 102
= 4256 - 102
= 4154
456 : 2 18 + 456 : 3 – 102
\(456:218+456:3-102\)
\(=456:221-102\)
\(=-\dfrac{22086}{221}\)
456 : 2 x 18 + 456 : 3 - 102
`@` `\text {Ans}`
`\downarrow`
`456 \div 2 \times 18 + 456 \div 3 - 102`
`= 456 \times 1/2 \times 18 + 456 \times 1/3 - 102`
`= 456 \times (1/2 \times 18 + 1/3) - 102`
`= 456 \times ( 9 + 1/3) - 102`
`= 456 \times 28/3 - 102`
`= 4256 - 102`
`= 4154`
456 : 2 x 18 + 456 : 3 - 102
= 4104 + 50
= 4154
456 : 2 \(\times\) 18 + 456 : 3 - 102
= 228 \(\times\) 18 + 152 - 102
= 4104 + 152 - 102
= 4256 - 102
= 4154
456/2*18+456/3-102
nhầm , thoy để tính luôn z :
456/2*18+456/3-102
= 4104 + 456/3 - 102
=4256-102
=4154
456:2*18+456:3-102 = ?
456 : 2 *18 +456 :3 -102 =228*18+ 152 - 102 =4104+50=4154
456:2*18+456:3-102=228 * 18+152-102
=4104+50
=4154
456:2x 18+456:3-102
456:2 x 18 + 456 :3 - 102
= 228 x 18 + 152 - 102
= 4104 + 50 = 4154
456 : 2 x 18 + 456 : 3 - 102
= ( 456 : 2 x 18 ) + ( 456 :3 ) - 102
= ( 228 x 18 ) + 152 - 102
= 4104 + 152 - 102
= 4256 - 102
= 4154
chúc bn học tốt . mk ko biết đúng hay sai tại vì là mk tính nhẩm .
Tính nhanh 456: 2 x 18 + 456: 3 - 102
`@` `\text {Ans}`
`\downarrow`
`456 \div2\times18 + 456\div3 - 102`
`= 456\times0,5\times18 + 456\times1/3 - 102`
`= 456\times (0,5 \times 18 + 1/3) - 102`
`= 456 \times(9 + 1/3) - 102`
`= 456 \times28/3 - 102`
`= 4256 - 102`
`= 4154`
=456*9+456:3-102
=4104+152-102
=4104+40
=4144
tinh nhanh 456 :2 .18+456:3-102
tính nhanh 456/2*18+456/3-102
= 456 : (2 x 18 + 3 x 102)
= 456 : (36 + 306)
= 456 : 342
= 1.333333333
hk như bn ghi sai đề