Tính nhanh
232x[36+62]-123x[62+36]
Giair giúp mình với
Mn giúp mình 2 câu này nha !!!!!!! Thanks
54×113+45×113+113
117×(36+62)-17×(62+63)
A,248x(36+62)-148x(62+36)
B,107x195+107x175-107x150
C,(2020x99+2020)-(2019x101-2019)
Giúp mik ạ
`@` `\text {Ans}`
`\downarrow`
`A,`
`248 \times (36 + 62) - 148 \times (62 + 36)`
`= (36+62) \times (248 - 148)`
`= 98 \times 100`
`= 9800`
`B,`
`107 \times 195 + 107 \times 175 - 107 \times 150`
`= 107 \times (195 + 175 - 150)`
`= 107 \times 220`
`= 23540`
`C,`
`(2020 \times 99 + 2020) - (2019 \times 101 - 2019)`
`= 2020 \times (99+1) - 2019 \times (101-1)`
`= 2020 \times 100 - 2019 \times 100`
`= 100 \times (2020 - 2019)`
`= 100 \times 1`
`= 100`
A. 248x(36+62)-148x(62+36)
=(36+62)x(248-148)
=98x100
=9800
B.107x195+107x175-107x150
=107x(195+175-150)
=107x220
=23540
C.(2020x99+2020)-(2019x101-2019)
=(2020x(99+1))-(2019x(101-1))
=(2020x100)-(2019x100)
=202000-201900
=100
tính nhanh
a) 54 * 113 + 45 * 113 + 113
b) 117 * (36 + 62) - 17 * (62 + 36)
mình sẽ tích cho ai có câu trả lời đầy đủ nhanh và đúng
a) 54x113+45x113+113 b)117x(36+62) -17x(62+36)
=(54+45+1)x113 =117x98-17x98
= 100x113 =(117-17)x98
= 11300 =100x98
=9800
a,54 x 113 + 45 x 113 + 113
=(54 + 45 +1) x 113
=100 x 113 = 11300
a) 113*( 54+45+1 ) = 113* 100=11300
b) 117*98-17*98=98*( 117-17 ) = 98*100=9800
Tính nhanh:
a)63x113+36x113+113
b)115x(36+62)-15x(62+36)
a)63x113+36x113+113
=113x(36+63+1)
=113x100
=11300
b)115x(36+62)-15x(62+36)
=115x98-15x98
=11270-1470
=9800
a,63.113+36.113+113
=63.113+36.113+113.1
=(63+36+1).113
=100.113
=11300
b,115.(36+62)-15.(62+36)
=115.98-15.98
=(115-15).98
=100.98
=9800
a) 63 x 113 + 36 x 113 + 113 x1
( 63 + 36 + 1 ) x 113
100 x 113 = 11300
b) 115 x ( 36 + 62 ) - 15 x ( 62 + 36 )
115 x 98 - 15 x 98
( 115 - 15 ) x 98
100 x 98 = 9800
A, 17×(36+62)-17×(62+36)
B, 24×17+4+18×76
Tính bằng cách thuận tiện
408+4+1368=412+1368=7180
nhớ cho mình nhé
Tính nhanh
a) 54 x 113 + 45 x 113 + 113
b) 117 x ( 36 + 62 ) - 17 x ( 62 + 36 )
a, = 113 x (54+45+1) = 113 x 100 = 11300
b, = (36+62) x (117-17) = 98 x 100 = 9800
k mk nha
a) 113 x (54+45+1)=113 x 100=11300
b) (36+62) x (117-17)=98 x 100=9800
117x(36+62)-17x(62+36)
= (36 + 62) x (117 - 17)
= 98 x 100 = 9800
Tinh nhanh
117 x ( 36 + 62 +17 ) x ( 62 + 36 )
= 117 x 100 - 17 x 100
= ( 117 - 17 ) x 100
= 100 x 100
= 10000
117 x 100 - 17 x 100
=(117 - 17) x 100
= 100 x 100
= 10 000
Tính giá trị biểu thức:
a) ( 532 × 7 - 266 × 14) × ( 532 × 7 + 266)
b) 117 × ( 36 + 62) - 17 × ( 62 + 36)
c) ( 145 × 99 + 145) - ( 143 × 101 - 143)
a, ( 532 x 7 - 266 x 14 ) x ( 532 x 7 + 266 )
= 3724 - 3714 x 3724 + 266
= 0 x 3990
= 0
b, 117 x ( 36 + 62 ) - 17 x ( 62 + 36 )
= 117 x 98 - 17 x 98
= 11466 - 1666
= 9800
c, ( 145 x 99 + 145 ) - ( 143 x 101 -143 )
= 14500 - 14300
= 200