Unknowns and Variables

Q.

What is pre-algebra in Maths?

Q. In the expression $5x^3{z}^2$, how many different variables (or unknowns) are there?

1. $5$
2. $6$
3. $2$
4. $3$

Q. Distance between the Statue of Liberty and the Eiffel tower is 'd' miles on Monday. The distance between them on Friday would be

1. $5d$
2. $\frac{d}{5}$
3. $d$

Q. Is it possible for an unknown to have more than one value at the same time?

1. Yes
2. No

Q. Unknowns in algebra behave exactly the way numbers do in terms of repetition.

1. True
2. False

Q. Ram bought a cough syrup in May 2004, the manufacturing date on the cough syrup was 07/2003, and the expiry date was 05/2005. How long can he consume it?
[ 2 marks ]

Q. If a person receives an allowance of $\$$20 per week, then what would be the value of the allowance received by the person after 3 weeks?

1. $\$20$
2. $\$40$
3. $\$60$
4. $\$80$

Q. The algebraic expression $3x^2+4x+5y+1$ has distinct variables.

Q. In total, a Beetle's basket comprises $50$ flowers, including roses, lilies, and sunflowers. How many sunflowers are in the basket if there are $20$ roses and $15$ lilies?

Q. If the sum of three consecutive integers is $72$, then the largest of the three integers is

Q. Rita has '$r$' peanuts. Sophie has $3$ fewer peanuts than Rita. Find the number of peanuts available with Sophie.

1. $r+3$
2. $r-3$
3. $r\times 3$

Q. The value of $p+q+r=50$. If $p=12$ and $q=8$ then find the value of $r$.

1. $20$
2. $25$
3. $30$
4. $35$

Q. John's bag contains a total of $10$ marbles of blue, white and red color. Find the number of white marbles in the bag if the number of blue and red marbles are $4$ and $3$ respectively.

1. $2$
2. $3$
3. $4$
4. None of the above

Q. Joe has 'j' peanuts. Sonia has 3 fewer peanuts than Joe. Mack has 5 more than Joe. Match the peanuts each has.

1. $j$
2. $j-3$
3. $j+5$