a)
=67.(36+65-1)
=67.100
=6700
b)
=[723.(45+4)]:725
=[723. 49 ]:725
=[723. 72 ]:725
=725 :725
=1
a) 67.36 + 67.65 - 67 = 67.\(\left(36+65-1\right)\) = 67. 100 = 6700
b) \(\left(7^{23}.45+7^{23}.4\right):7^{25}\) = \(7^{23}.\left(45+4\right):7^{25}=7^{23}.7^2:7^{25}=1\)
a) 67 . 36 + 67 . 65 - 67 = 67 . ( 36 + 65 - 1 )
= 67 . ( 101 - 1 )
= 67 . 100 = 6700
b) ( 7^23 . 45 + 7^23 . 4 ) : 7^25 = [ ( 7^23 . ( 45 + 4 ) ] : 7^25
= [ 7^23 . 49 ] : 7^25
= [ 7^23 . 7^2 ] : 7^25
= 7^25 : 7^25
= 7^0 = 1
a/ 67.36+67.65-67=67.(36+65-1)=67.100=6700
b/ (723.45+ 723.4) :725= 723.(45+4):725=723.49:725=723.72:725= 723+2-25=7
a,67.36+67.65-67.1
=67.(36+65-1)
=67.100
=6700
b,
a) 67. (36+65-1)
= 67.100
= 6700
b) 7
mũ 23.(45+4) : 7 mũ 25
= 7 mũ 23.49 : 7 mũ 25
= 7 mũ 23. 7 mũ 2 : 7 mũ 25
= 7 mũ 25 : 7 mũ 25
= 7 mũ 1
= 1
a)67.36+67.65-67=67.36+67.65.67-1
=67.(36+65-1)
=67.100
=6700
b)(723.45+723.4):725=
\(67.36+67.65-67=67..\left(36+65\right)-67=67.100-67=6700-67=6633\)
a) 67.36+67.65-67=67.(36+65-1) = 67.100 = 6700
b)(723.45+723.4):725=723.(45+4):725=723.49:725=723.72:725=725:725=70=1
Bài 2:
a) = 67. 36 + 67.65 - 67.1
=67. ( 36+65-1)
= 67.100
= 6700
b) = 723 .( 45 + 4) : 725
= 723. 49 : 725
= 723 . 72: 725
= 725 : 725
= 71
= 7
a) 67.36 + 67.65 - 67
= 67.36 + 67.65 -67 .1
= 67. ( 36+ 65 -1)
= 67.100
= 6700
a,67.36+67.65-67
=2412+4355-67
=6767-67
=6700
b, (7^23.45+7^23.4):7^25
=7^23.(45+4):7^25
=7^23.49:7^25
=7^23.7^2:7^25
=7^23+2:7^25
=7^25:7^25
=1
a)67.36+67.65-67.1=67.(36+65-1)=67.100=6700 B)7^23.45+4.7^25
a)
=67(36+65-1)
=67.100
=6700
b)
=7^23(45+4)/7^25
=7^23.7^2/7^25
=7^25/7^25
=1
a,67.(36+65-1)
=67.100
=6700
b,(723.45+723.4):725
=723.(45+4):725
=723.49:725
=723.72:725
=7
a)67x 36+ 67x 65- 67
=67x (36+ 65-1)
=67x 100
=6700
b) (723x 45+723x 4) : 725
=723x 45+ 723x 4:725
=723x (45+ 4): 725
=723x 49: 725
=723x 72: 725
=723+2-25
=71
=7
a 67.36+67.65-67= 67. = 67. 100 = 6700
b) =
a) 67.36 + 67.65 - 67 =
= 67.(36 + 65 - 1)
= 67.100
= 6700
b) (723.45 + 723.4) : 725 =
= 723.(45 + 4) : 725
= 723.49 : 725
= 723.72 : 725
= 725 : 725
= 1
A. 67. ( 36 + 65 ) - 67
= 67. 101-67
= 168-67
= 101