Expressions using Letter Numbers Class 7 Fill in the Blanks
hardExpressions using Letter Numbers Class 7 Fill in the Blanks
Expressions using Letter Numbers Class 7 Fill in the Blanks
Question 1.
The distance (in km) travelled in h hours at a constant speed of 40 km per hour is ________.
Solution:
40h
Question 2.
If p kg of potatoes are bought for ? 70, then cost of 1 kg potatoes is ? ________.
Solution:
[latex]\frac {70}{p}[/latex]
Question 3.
The number of days in w weeks is ________.
Solution:
7w
Question 4.
7x exceeds by 11 can be expressed as ________.
Solution:
7x + 11
Question 5.
4x + 3y - 9 + 2x - y is equal to ________.
Solution:
6x + 2y - 9.
Expressions using Letter Numbers Class 7 True or False
Question 1.
Area of a square of side length x units is 4x square units.
Solution:
False
Question 2.
If we multiply x by 3 and subtract the obtained product from 5, then the resulting expression will be 5 - 3x.
Solution:
True
Question 3.
The values of 5x and 5x - 5 at x = 1 are 5 and 0 respectively.
Solution:
True
Question 4.
Sum of y and 3 is 3y.
Solution:
False
Question 5.
The terms which contains the same letter numbers are called like terms.
Solution:
True
Expressions using Letter Numbers Class 7 Match the following
Match the Column I with Column II
| Column I | Column II |
| (i) The variable in the expression 2y + 7. | (a) x + 24 |
| (ii) (x + 3) + 7 × 3 | (b) 3x + 30 |
| (iii) (x + 3 + 7) × 3 | (c) 4x - 3y |
| (iv) 3x - 2y + (3 - 2) × x - y | (d) 9x + 2y |
| (v) 15x + 2x - 8x + 2y | (e) y |
Solution:
| Column I | Column II |
| (i) The variable in the expression 2y + 7. | (e) y |
| (ii) (x + 3) + 7 × 3 | (a) x + 24 |
| (iii) (x + 3 + 7) × 3 | (b) 3x + 30 |
| (iv) 3x - 2y + (3 - 2) × x - y | (c) 4x - 3y |
| (v) 15x + 2x - 8x + 2y | (d) 9x + 2y |