10-2+100 =.........
(1^100+2^100+...+10^100):(1^100+2^100+...+10^100)
[-2083/100 x 2/10+-917/100 x 2/10] : [247/100 x 5/10--(-353)/100 x 5/10] = ?
Tính nhanh đó
A=(1^100+2^100+…+10^100).(5^10-25^5)
B=(2^5+3^5+4^5).(1^2+2^2+…+100^2).(4^10-2^20)
Tính nhanh A = (1^100+2^100+…+10^100).(5^10-25^5)
B = (2^5+3^5+4^5).(1^2+2^2+…+100^2).(4^10-2^20)
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`Answer:`
\(A=\left(1^{100}+2^{100}+...+10^{100}\right)\left(5^{10}-25^5\right)\)
\(=\left(1^{100}+2^{100}+...+10^{100}\right)[5^{10}-\left(5^2\right)^5]\)
\(=\left(1^{100}+2^{100}+...+10^{100}\right)\left(5^{10}-5^{10}\right)\)
\(=\left(1^{100}+2^{100}+...+10^{100}\right).0\)
\(=0\)
\(B=\left(2^5+3^5+4^5\right)\left(1^2+2^2+...+100^2\right)\left(4^{10}-2^{20}\right)\)
\(=\left(2^5+3^5+4^5\right)\left(1^2+2^2+...+100^2\right)\left(2^{2.10}-2^{20}\right)\)
\(=\left(2^5+3^5+4^5\right)\left(1^2+2^2+...+100^2\right).0\)
\(=0\)
tính nhanh
A=(1^100+2^100+…+10^100).(5^10-25^5)
B=(2^5+3^5+4^5).(1^2+2^2+…+100^2).(4^10-2^20)
2+2+3+4+5*10+100/100+10+100+123456789+123456-12345=
=13568072 nha bạn
chúc bạn học giỏinha bạn
cố gắng lên nha
1005 : 1003 = ?
102 . 101 =?
500200 . 50010 =?
105 . 102 = ?
10030 . 10010 = ?
200100 : 20010 = ?
10020 . 10010 = ?
300100 . 300100 = ?
1005 : 1003 = 1002
102 . 101 = 103
500200 . 50010 = 500210
105 . 102 = 107
10030 . 10010 = 10040
200100 : 20010 = 20090
10020 . 10010 = 10030
300100 . 300100 = 300200
1005 : 1003
= 1005 - 3
= 1002
102 . 101
= 102 + 1
= 103
500200 . 50010
= 500200 + 10
= 500210
105 . 102
= 105 + 2
= 107
10030 . 10010
= 10030 + 10
= 10040
200100 : 20010
= 200100 - 10
= 200190
10020 . 10010
= 10020 + 10
= 10030
300100 .300100
= 300100 + 100
= 300200
Tinh:
A= (10^3-1}^1.(10^3-2)^2.(10^3-3)^3.........(10^3-100)^100
A, X = 2 x 10 000 + 2 x 1000 +5 x 100+9 x 10+7
B, X =7 x 100 000 + 7 x 10 000 + 8 x 100 + 5
C, X= 4 x 10 000 +6 x 100 + 3 x 10
D, X= 1 x 100 000 + A x 1000 + 2 x100 + 1 x 10 + B
MONG CAC BAN LAM GIUP MINH
687 + ( 2 x 5 ) + 10 =
Mẫu
600 + ( 2 x 5 ) + 20 + 100 =
Thực hiện phép tính 2 x 5
2 x 5 = 2 + 2 + 2 + 2 + 2 = 10
2 x 5 = 10
600 + 10 + 20 + 100 = 730
`687 + (2 × 5) + 10`
`= 687 + 10 + 10`
`= 697 + 10`
`= 707`