Math practice for 13 year olds - page 27 of 434
Number of problems found: 8668
- A pole
1/8 of a pole is in mud, 1/3 of it in water, and the rest above water. If the length of the pole is 72 meters, find the length of the pole above the water. - There 33
There is a number that is three-fifths the total of the other number. When four is added to one of the numbers, their sum will be equal to the other number. There are two pairs of numbers that satisfy these descriptions. What are they? - Apples 29
In a fruit market, apples are currently £4 per kilogram. If you buy ten kilograms of apples, you will receive three-tenths of the total price. How much will you pay for ten kilograms of apples at the market? - Eva 46
Eva works as a sales clerk. She is paid a salary of 3000 a week plus a 2% commission on sales over 4000. Find her gross pay for a week in which her sales are 9500. - The radius 2
The radius of a circle is increased by 5%. What is the percentage increase in their circumference area? - Apothem
Find the ratio between the two perimeters, the two areas, and two corresponding apothems of two regular hexagons whose sides are 2-3/4 inches and 4-1/8 inches. - The apothem The apothem of a regular hexagon is 5√3 inches. Find one of its sides and area.
- One side 4
One side of a regular octagon is 12 inches. Find the apothem and its area. - Y-intercept 2
What is the y-intercept of 4x + 8y =16? Write coordinates of x0, y0 of that y-intercept. - Slope of the line
What is the slope of the line passing through two points (-3,5) and (2, -1)? - Same distance
What decimal is the same distance from 7.1 and 7.4? - Smoothie 2
David is using 100 ml of pineapple juice to make a smoothie. He needs to use a pineapple juice to orange juice ratio of 2: 5. How much orange juice should he use? - 2-cycle
2-cycle engines require a mixture of oil and gas to run properly. For every gallon of gas, a certain 2-cycle engine requires 1 1/4 fl oz of oil. How much oil must be added to prepare 3 1/2 gallons of gas to get the proper mixture? - Collin Collin is making fruit for a birthday party using the recipe below Ingredients Pink lemonade ; 1 1/2 gal Seltzer water ; 2 3/4 gal Fruit juice ; 7/8 gal Collin is using a punch bowl that holds 8 gallons of punch. How much more punch could Collin make the
- Sweatshirts
The students ordered 13 sweatshirts at a total price of 236.60. The next day, however, they ordered more sweatshirts. The final invoice was issued for €327.60. How many sweatshirts did the students order?
- Which 15
Which two digits need to be interchanged to make the following equation correct? 16+7*2+4-3=12 A) 2 and 4 B) 7 and 4 C) 16 and 2 D) 7 and 3 - Express 71
Express 2 minutes 30 seconds as a fraction of 3/4 hours. - Time vs pizza
If Mr. Cromleigh can eat 1/4 of a pizza in 1/6 of an hour, how many pizzas can he eat in one hour? He can eat ____ pizzas. - Sonya
Sonya, Jill, and Donna run each Monday. Jill ran 6/12 of an hour, and Donna ran 5/12 of an hour. If the girls ran a total of one whole hour, what fraction of an hour did Sonya run? - A data
A data set has the sample mean =14 and the sum of the data values=294. How many values are there in the data set?
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