Maths practice for 14 year olds - page 30 of 370

Number of problems found: 7388

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?
Body mass index
Compute for BMI, then classify: Nr; weight ; height 1; 35 kg ; 1.25 m 2; 40 kg; 1.40 m 3; 50 kg; 1.75 m 4; 55 kg; 1.65 m 5; 63 kg; 1.23 m
Math class
There are a total of 30 students in a math class. The number of boys is 2 more than 3 times the number of girls. How many boys are in this math class?
You bought
You bought a table with chairs, and you were charged $145.86. The sales tax was 4%, and the set was 15% off. What was the original price?

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