Perimeter of a rectangle is found by using the formula P = 2 ( l + w), where l and w are respectively the length and breadth of the rectangle. Write the rule that is expressed by this formula in words.NCERT - Exemplar Mathematics
One more than twice the number.NCERT - Exemplar Mathematics
Complete the table and find the solution to the equation m - 7 = 3.NCERT - Mathematics
Pick out the solution from the values given in the brackets next to each equation. Show that the other values do not satisfy the equation.
(a) 5m = 60 (10, 5, 12, 15)
(b) n + 12 = 20 (12, 8, 20, 0)
(c) p – 5 = 5 (0, 10, 5, -5)
(d) =7 (7, 2, 10, 14)
(e) r - 4 = 0 (4, -4, 8, 0)
(f) x + 4 = 2 (-2, 0, 2, 4)NCERT - Mathematics
Given Sara’s age today to be y years. Think of her age in the future or in the past. What will the following expressions indicate?
Y + 7, y – 3, y + 4, y – 2NCERT - Mathematics
Complete the table and by inspection of the table find the solution to the equation m + 10 = 16.
Complete the entires in the third column of the table.
Solve the following riddles, you may yourself construct such riddles.
Who am I?
(i) Go round a square
Counting every corner
Thrice and no more !
Add the count to me
To get exactly thirty four !
(ii) For each day of the week
Make an upcount from me
If you make no mistake
You will get twenty three !
(iii) I am a special number
Take away from me a six !
A whole cricket team
You will still be able to fix !
(iv) Tell me who I am
I shall give a pretty clue !
You will get me back
If you take me out of twenty two !NCERT - Mathematics
Complete the table and by inspection of the table, find the solution to the equation 5t = 35.
Complete the table and find the solution of the equation = 4 using the table