Maths practice for 14 year olds - page 30 of 379
Number of problems found: 7575
- Dataset: 2
Dataset: 4, 9, 7, 8, 5, 2 a. What number is n in xn? b. Find ∑x c. Find ∑(x-2)2 d. Find √∑(x-2)²/6 - Percentages 10
Pls, convert 1/7 into a percent. What is the solution? - A number 7
A number is such that if we multiply it by 3/5 and add 4/7 to the product, we get -2/35. Find the number. - Average and mean Suppose that the average of the four values, {-1, x, -2x, 3}, is equal to x - 1. Find the value of x.
- The ratio 10
The ratio of length and breadth of a rectangular park is 3:2, and its perimeter is 150m. Find its area. - A linear
A linear function has a y-intercept of -12 and a slope of 3/2. What is the equation of the line? - The sum 35
The sum of the two numbers is -20. One number is 3 more than the other one. Find the numbers.
- The linear The linear equation 5y-3x-4=0 Can be written in the form y=mx+c. Find the values of m and c.
- The total 2
The total price of a car is $17,050 the selling price is $16500. What was the sale tax - My 4 My 4-digit number is a palindrome; it has a remainder of 21 when you divide it by 100. what is my number? A palindrome is a number that does not change if you write it backward.
- The distance 3 The distance covered by car in 1 hour is 38 1/2 km. Find the distance it will cover in a) 3 1/2 hours, b) 5 hours.
- Cooking time
It should cook for 5 1/10 hours. Dinner time is 4:45 PM. What time should you start cooking the ham? - Lorelai
Lorelai scored 15 points on her pretest. On her second try, she got 75 points. What is her percent increase? - In 2001 In 2001, a rare baseball card was worth $11.00. This year the card is worth $8.00. What percent of the value of the card has been lost?
- There 28
There are 100 cents in a dollar. What percent of a dollar is $0.15?
- A fair 2
A fair die is thrown two times. What is the probability that the sum of the score is almost 8? - Rupees
Seventy coins of rs 10 and rs 50 are kept in a purse. Suppose the total value of the money in the purse is RS.1900. find the number of each type of coin. - A gym
The A gym offers two packages for yearly memberships. The first plan costs $50 to be a member. Then, when you visit the gum, it is $5 to get in. The second plan costs $200, but it only costs $2 to get in each time you visit. How many visits would it take - Decimal numbers
When two decimal numbers are multiplied, the answer is 0.072. When the same two decimal numbers are added, the answer is 0.72. What are the two decimal numbers? - Probabilities
The bag has 10 green, 6 yellow, and 4 blue. What are the probabilities as a fraction, decimals, and percents?
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