Math practice for 13 year olds - page 41 of 414

Number of problems found: 8279

Percents 4
900 to 1200. What is the percentage increase?
The difference 4
The difference between four times a number and five is the same as three more than twice a number. Find the number.
The area 4
In square decimeters, how much is the area of a cylinder with a height of 2 dm and a diameter of 1 dm? "
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 150 m. Find its area.
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.
Angles sum 180
In triangle ABC, the measure of ∠A is 30°, and the measure of ∠C is 90°. What is the measure of ∠B?
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.
A pet 2
A pet store has 15 birds and 75 fish. In the simplest form, what is the pet store's ratio of birds to fish?
Cooking time
It should cook for 5 1/10 hours. Dinner time is 4:45 PM. What time should you start cooking the ham?
A RIBBON
A RIBBON 27 1/3 m long is cut into equal pieces measuring 2 3/4 m each. Find the number of pieces of ribbon cut.
Lorelai
Lorelai scored 15 points on her pretest. On her second try, she got 75 points. What is her percent increase?
The sum 33
The sum of two integers is -500. If one of them is 600, then find the other integer.
There 28
There are 100 cents in a dollar. What percent of a dollar is $0.15?
Pizza diameter
If an 18-inch pizza costs $16.99 and is cut into 12 slices, what is the cost per square inch?
The bowling
The bowling scores in the local bowling tournament are 175, 200, 150, and 165. If he intends to average 170 in the 5 game series, what must his score be on his last game?

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