Toán Lớp 6: giải hộ em câu:
a) 3 x 10^3 + 2 x 10^2 + 5 x 10
b) 35 – 2 x 1^111 + 3 x 7 x 7^2
c) 5 x 4^3 + 2 x 3 – 81 x 2 + 7
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 6: giải hộ em câu:
a) 3 x 10^3 + 2 x 10^2 + 5 x 10
b) 35 – 2 x 1^111 + 3 x 7 x 7^2
c) 5 x 4^3 + 2 x 3 – 81 x 2 + 7
Comments ( 2 )
=3xx1000+2xx100+50
=3000+200+50
=3250
b) 35 – 2 xx 1^111 + 3 xx 7 xx 7^2
=35-2xx1+21xx49
=35-2+1029
=33+1029
=1062
c) 5 xx 4^3 + 2 xx 3 – 81 xx 2 + 7
=5xx64+6-162+7
=320+6-162+7
=326-162+7
=164+7
=171