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Showing: Class 9 / Mental Maths (16 questions)
Estimate the square root of 150 to the nearest whole number.
What is the sum of the first 10 consecutive positive integers (1 to 10)?
If you divide a number by 4, the maximum possible remainder is:
What is the unit digit (ones place) of the product 432 × 789 × 114?
Which of the following numbers is completely divisible by 9?
A man buys apples at 3 for a rupee and sells them at 2 for a rupee. Find his gain percent.
A trader marks goods 25% above cost price and gives 10% discount. Find the profit percentage.