JSS 1 Mathematics Flashcards: Solving Open Sentences with Arithmetic Operations

Question 1

Solve $2x+5=17$.

Accepted Answer

6

Question 2

Solve $3x-4=20$.

Accepted Answer

8

Question 3

Solve $x/4+3=8$.

Accepted Answer

20

Question 4

Solve $5x+2=3x+18$.

Accepted Answer

8

Question 5

Solve $4(x+2)=28$.

Accepted Answer

5

Question 6

Solve $3(x-1)=18$.

Accepted Answer

7

Question 7

Solve $2x/5=6$.

Accepted Answer

15

Question 8

A number is doubled and 7 is added to give 25. What is the number?

Accepted Answer

9

Question 9

Three times a number minus 5 equals 16. Find the number.

Accepted Answer

7

Question 10

A taxi fare has a fixed charge of ₦500 plus ₦200 per kilometre. If the fare is ₦1,500, how many kilometres were travelled?

Accepted Answer

5 km

Question 11

A mother shares ₦2,400 equally among some children, and each receives ₦600. How many children are there?

Accepted Answer

4

Question 12

The perimeter of a rectangle is 30 cm. If its length is 9 cm, what is its width?

Accepted Answer

6 cm

Question 13

What is the first step in solving $4x+9=29$?

Accepted Answer

Subtract 9 from both sides.

Question 14

Which value verifies $6x-7=23$?

Accepted Answer

5

Question 15

What number completes $3(\square+2)=21$?

Accepted Answer

5

Question 16

If $2a+3=15$, what is $a+4$?

Accepted Answer

10

Question 17

Solve $20-2x=8$.

Accepted Answer

6

Question 18

Solve $x/3-2=5$.

Accepted Answer

21

Question 19

Which equation represents “five less than twice a number is 13”?

Accepted Answer

$2x-5=13$

Question 20

Why must the same operation be performed on both sides of an equation?

Accepted Answer

To preserve the equality.

Strong work.