Maths AY23

What is the only even prime number?

(a)  

The price of the car increased by 5%. If the new price was $22,050, what was the old price?

(a)  

Express 8/33 as a recurring (repeating) decimal.

(a)  

1. A computer virus destroys computer memory. On the first day it destroyed ½ of this memory. On the second day it destroyed ⅓ of the memory remaining after the first day; on the third day it destroyed ¼ of the memory remaining after two days. What part of all the computer memory was left after those three days?

(a)  

The different figures represent different digits. Find the digit corresponding to the square.

(a)  

The sum of 5 times a number and 8 is 48. Find the number.

(a)  

Given the equation −7x − 3x + 2 = −8x − 8, solve for x.

(a)  

Five years ago, John’s age was half of the age he will be in 8 years. How old is he now?

(a)  

Oliver’s salary is 18,000 Baht and he is due to get an increase of 4%. How much will this increase be?

(a)  

Find the gradient/slope of the line parallel to the equation 4x – 5y = 12.

(a)