Advertisements
Advertisements
Question
A 1
+ 1 B
B 0
Advertisements
Solution
B = 9 as 9 + 1 = 10.
We want 0 at units place and 1 is carry over.
Now B - 1 -1 = A.
∴ A = 9 - 2 = 7
Hence A + 7 and B = 9
7 1
+ 1 9
9 0
APPEARS IN
RELATED QUESTIONS
Fill in the blanks:
On dividing 18 by 6, quotient = ____ and remainder = ____
Fill in the blanks:
Factor of a number is ______ of ______
Fill in the blank:
______ is factor of every number.
Three pieces of timber, 42-m, 49-m and 63-m long, have to be divided into planks of the same length. What is the greatest possible length of each plank?
There are 527 apples, 646 pears, and 748 oranges. These are to be arranged in heaps containing the same number of fruits. Find the greatest number of fruits possible in each heap. How many heaps are formed?
Find the HCF of
2 and an even number
Three bells toll at intervals of 9, 12, 15 minutes. If they start tolling together, after what time will they next toll together?
Colour a rectangle made of 20 boxes in some other way.
In how many ways can you colour a rectangle of 20 boxes? Colour them all in the grid, and write the length and width of each rectangle you have coloured.
Now complete the table, for different numbers of bangles. For each number see what different groups can be made.
| Number of bangles | Different groups we can make |
| 18 | 1, 2, 3, 6, 9, 18 |
| 24 | 1, 2, .................... |
| 5 | |
| 9 | |
| 7 | |
| 2 | |
| 10 | |
| 1 | |
| 20 | |
| 13 | |
| 21 |
