cac bn giai giup mk bai 54 , 55 , 57, 58, 59 , 60 , 61, 5.1, 5.2 sach bai tap toan lop 6 tap 1 trang 12 va 13

Do:Ta biet 11² ;111² = 12 321

Hay du doan :1111² bang bao nhieu ? Kiem tra lai du doan do

Giai ho mk nha bai nay o trong sach GK toan tr29 bai 66

Ai nhanh nhat mk tick cho

A  tradesman worked from 7:30 a.m to 12:00 p.m to make 3 tools. Find the average amount of time it took him to make 1 tool

  Bai toan nay binh thuong nhung de la tieng anh cac ban hay giai nhe

Thay hay nho tick cho mk nhe .Thanks

14/5 -5/6 +1/12

neu ban nao biet lam xin hay giaup minh bai toan nay nho la phai giai bai toan do ra vi sang mai minh phai chua bai roi do

bai toan nay trong  sach giai toan the gioi ai  giai dc tick nha 

N=5-x=5%+x-1

a) chung minh 

b)ket qua

c) khang dinh tai sao, va them 5 vao x

d) N=5 ?????????

Giúp mk nha mk cần gấp!! mk tick cho 5 bạn

Giup minh giai bai toan nay voi
Khong thuc hien phep tinh xet xem tich sau co tan cung bang chu so nao
a.2*12*22*32*...*2012
b.3*13*23*...*2013
c.4*14*24*...*2004
d.2*12*22*...*2020
Cac ban giai ro giup minh nha.Minh cam on

Ai kb bn vs mk va giai bai toan trong chua tra loi mk se tk