🧠 Math 30/30 Challenge
ANSER COMMENT BOX
Using exactly four 9s and basic mathematical operations, make 100.
- 48 + 37 = ?
- 125 − 79 = ?
- 16 × 7 = ?
- 144 ÷ 12 = ?
- 25% of 240 = ?
- 3/4 of 80 = ?
- 15² = ?
- √324 = ?
- 2³ × 5 = ?
- 0.75 × 200 = ?
- If 5x = 65, find x.
- Solve: 3x + 7 = 28.
- Solve: 2(x + 4) = 20.
- If x/4 = 9, find x.
- Simplify: 5a + 3a − 2a.
- What is the next number: 2, 6, 12, 20, 30, __?
- What is the next number: 81, 27, 9, 3, __?
- Find the average of 12, 18, 24, 30.
- A ₹500 item gets a 20% discount. What is the final price?
- A number increased by 25% becomes 100. What was the original number?
- The ratio of boys to girls is 3:5. If there are 40 students, how many are boys?
- A car travels 180 km in 3 hours. What is its average speed?
- Find the area of a rectangle with length 15 cm and width 8 cm.
- A square has area 196 cm². Find its side length.
- Find the perimeter of a triangle with sides 7 cm, 11 cm and 13 cm.
- If 2⁵ × 2³ = 2ⁿ, find n.
- Solve: x² = 169, where x > 0.
- If 3 pens cost ₹45, how much do 8 pens cost?
- A father is 40 and his son is 10. After how many years will the father be twice the son’s age?
- Boss Question 👑: Using exactly four 9s and basic mathematical operations, make 100.