Math Olympics

Q1. What is the missing number

1 3 8 19 42 ?

Q2. A boy is 4 years old and his sister is three times as old as he is. When the boy is 12 years old, how old will his sister be?

a. 16 b. 20 c. 24 d. 28 e. 32

Q3. Place the numbers 1 through 9 in a square so that the sum of the numbers in any horizontal, vertical, or main diagonal line is always the same number (Hint: The sum is 15)

Q4. Use the number 4 four times (using a combination of addition, multiplication, subtraction and division) to make the number:

For example, to make the number 7, 4+4-(4/4)

Q5. Tina and Tom were twins. Tina saves and Tom spends. Tom found a $20 note on Sunday evening and spent $2 a day starting on Monday. Coincidentally, Tina started work that Monday and gets $2.50 a day. How long would it be before Tina has more money than Tom?

Level 1

Level 1