Một số có 2 chữ số , sẽ giảm đi bao nhiêu đơn vị nếu bớt đi 3 ở hàng chục?
CÓ LỜI GIẢI NHÉ!
một số có hai chữ số sẽ giảm bao nhiêu đơn vị , nếu bớt đi 3 ở chữ số chục
Bài 14: Cho số a có hai chữ số:
a) Nếu chữ số hàng chục bớt đi 3 thì số a giảm đi bao nhiêu đơn vị?
b) Nếu chữ số hàng chục tăng thêm 4 thì số a tăng thêm bao nhiêu đơn vị?
c) Nếu chữ số hàng chục tăng thêm 1 và chữ số hàng đơn vị giảm đi 1 thì số a tăng thêm bao nhiêu đơn vị?
a.30 đơn vị
b. 40 đơn vị
c. 9 đơn vị
các bạn giúp mình bài này với: Cho số a có hai chữ số:
a) Nếu chữ số hàng chục bớt đi 3 thì số a giảm đi bao nhiêu đơn vị?
.................................................................................................
b) Nếu chữ số hàng chục tăng thêm 4 thì số a tăng thêm bao nhiêu đơn vị?
...............................................................................................
c) Nếu chữ số hàng chục tăng thêm 1 và chữ số hàng đơn vị giảm đi 1 thì số a tăng thêm bao nhiêu đơn vị?
a) giảm 30 đơn vị
b) tăng 40 đơn vị
c) tăng 9 đơn vị
a) Nếu chữ số hàng chục bớt đi 3 thì số a giảm 30 đơn vị
b) Nếu chữ số hàng chục tăng thêm 4 thì số a tăng thêm 40 đơn vị
c) Nếu chữ số hàng chục tăng thêm 1 và chữ số hàng đơn vị giảm đi 1 thì số a tăng thêm 9 đơn vị.
Tk cho mình nha ae!!!!!!!!!!!!!!
giúp mình bài này nhé ;Bài 1 Cho số 408:
a) Nếu chữ số hàng trăm bớt đi (hay tăng thêm) 2 thì số đó giảm đi hay tăng thêm bao nhiêu đơn vị?
b) Số đó thay đổi thế nào nếu đổi chỗ chữ số 0 và chữ số 8 cho nhau?
Bài 2:
a) Hai số có hai chữ số có cùng chữ số hàng chục mà chữ số hàng đơn vị hơn kém nhau 7 thì hai số đó hơn kém nhau bao nhiêu đơn vị?
b) Hai số có hai chữ số có cùng chữ số hàng đơn vị mà chữ số hàng chục hơn kém nhau 3 thì số đó hơn kém nhau bao nhiêu đơn vị?
Bài 1:
a, Số đó sẽ tăng hoặc giảm 200 đơn vị.
b, Nếu đổi chỗ số 0 và số 8 số đó sẽ thay đổi là 480
Tìm số có 4 chữ số ,biết rằng nếu xóa đi chữ số ở hàng đơn vị và chữ số o hàng chục thì số đó sẽ giảm đi 1188 đơn vị
các bạn giúp mình với nhé
Gọi các chữ số hàng nghìn , trăm , chục , đơn vị lần lượt là abcd
Theo đề bài ta có:abcd = 1188+ab
Trong phép cộng, khi cộng 2 chữ số trong cùng một hàng thì có nhớ nhiều nhất là 1 nên ab chỉ có thể là 11 hoặc 12
Nếu ab = 11 thì abcd =1188 + 11 = 1199
Nếu ab = 12 thì abcd = 1188 + 12 = 1200
Vậy ta tìm đc 2 số thỏa mãn đề bài là : 1199 và 1200
Đs:1199 và 1200
Nhớ k mk nhe!!!
Một số có ba chữ số sẽ giảm đi bao nhiêu đơn vị nếu giảm số trăm đi 2 và giảm số chục đi 4
Tìm một số có 4 chữ số, biết rằng nếu xóa đi chữ số hàng đơn vị và chữ số hàng chục thì số đó giảm đi 1188 đơn vị
[ Trình Bày lời giải ]
xóa chữ số hđv thì số đó giảm 10 lần
số ban đầu là: 1188:(10-1)=132
đáp số:...
mk nghĩ bài này chỉ tìm dc số có 3 chữ số thôi, k mk nhé
16383
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bạn muốn chép trên này hả Nguyễn Tuấn Anh lớp 5a ?
Bài 1 Cho số 408:
a) Nếu chữ số hàng trăm bớt đi (hay tăng thêm) 2 thì số đó giảm đi hay tăng thêm bao nhiêu đơn vị?
b) Số đó thay đổi thế nào nếu đổi chỗ chữ số 0 và chữ số 8 cho nhau?
Bài 2:
a) Hai số có hai chữ số có cùng chữ số hàng chục mà chữ số hàng đơn vị hơn kém nhau 7 thì hai số đó hơn kém nhau bao nhiêu đơn vị?
b) Hai số có hai chữ số có cùng chữ số hàng đơn vị mà chữ số hàng chục hơn kém nhau 3 thì số đó hơn kém nhau bao nhiêu đơn vị?
giải bài giải bà 2 được ko
tìm số có 4 chữ số nếu bớt chữ số ở hàng đơn vị và hàng chục thì số đó giảm đi 1996