Question

WORKSHEET TASK-5
NUMBER SYSTEM-II
Solve the following
a. A number increased by 21 is 25. Find the number.
b. Twenty-five less than a number is 22. Find the number.
c. One-half of a number is 23. What is the number?
d. Nine more than a number is 23. What is the number?
e. A number increased by 16 is 21. Find the number.
f. A number diminished by 15 is 4. Find the number
g. One-half of number is 50. Find the number.
h. Ten less than a number is 6. Find the number.
i. A number diminished by 15 is 9. Find the number.
j. Twenty-two more than a number is 40. What is the number?
k. A number decreased by 15 is 25. Find the number.
1. A number increased by 126 is 129. Find the number.
m. Seventy-Five more than a number is 125. What is the number?
n. A number diminished by 154 is 44. Find the number.
o. One-half of a number is 82. Find the number.​

Answer 1

Answer:

1} 4

2} 47

3}46

4}14

5}5

6} 19

7}100

8}16

9}24

10}18

11}40

12}3

13}50

14}198

15}164

Step-by-step explanation:

you have to take the missing number as a variable, say it is x.

if it is addition problem then you have to it like this

x+21=25

so x=25-21

x=4

subtraction problem

x-25=22

so x=25+22

x=47

division problem

x/2=23

so x =23*2

x=46

multiplication problem is like [even though it is not given}

4x=12

so x=12/4

x=3

all these our solved with the principle that signs change on the other side of equals to.

like+ becomes-

-becomes+

* becomes/

/ becomes*

Answer 2

Answer:

a number increased by 21 is 25 find the number