Math practice for 13 year olds - page 145 of 428

Number of problems found: 8558

A perimeter
The perimeter of a parallelogram is 2.8 meters. The length of one of its sides is equal to one-seventh of the entire perimeter. Find the lengths of the sides of the parallelogram.
Eights of butter
How many eights of butter (1/8 of kg = 125 g) can be stored in a box with dimensions of 4 dm, 2 dm, and 1.8 dm if an eighth of butter has dimensions of 8 cm, 5 cm, 3 cm?
A farmer 3
A farmer sells 9.3 kg of pears and apples at the farmers market. 3/4 of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmer's market?
The ratio 4
The ratio of two numbers is 5:4. If 40% of the first number is 12, what will be 50% of the second number?
Length 9
The length of a rectangle is 8 meters smaller than twice of breadth. If the perimeter of the rectangle is 50, find its length and breadth.
What are 3
What are the two digits that, when inserted in the blank spaces, will make 234 _ _ divisible by 8?
Clothes 4
If the cost of 16.5 meters of cloth is ₹2,062.50, then find the cost of 24.75 meters of clothes.
Cost structure
You are currently trying to decide between two cost structures for your business: one with a greater proportion of short-term fixed costs and another more heavily weighted to variable costs. Estimated revenue and cost data for each alternative are as foll
Two numbers 11
The sum of two rational numbers is (-2). If one of them is 3/5, find the other.
Quadrilateral eq3
Three sides of a quadrilateral are equal to the foreside, which is 16 cm long. What is the length of the one with equal sides if the perimeter is 58 cm?
Equivalent expression
Pablo rewrites the expression 8y-24 as 8(y-3). Hana rewrites 8y-24 as 2(4y-12). Are Pablo's and Hana's expressions each equivalent to 8y-24? Explain your reasoning.
Dimensions of rectangle
Find the dimensions of a rectangle, given that its perimeter is 110 cm. Its length is 1 cm, more than twice its width.
Percent to interval
76% is between which the following two numbers. 1) 1/5 & 1/4. 2) 1/3 & 1/2 3) 2/3 & 7/10 4) 3/4 & 5/6
A number 5
A number is divisible by 24, 25, and 120 if it is increased by 20. Find the number.
The cost 3
The cost of 2 ¾ liters of petrol is Rs 250 ½. What is the cost of 1 liter of petrol?
Markup
A store pays $370 for a bicycle. The percentage of markup is 19%. What is the selling price of the bike?
The area
The area of a rhombus is 143 m². If the longer diagonal is 26 m, find the shorter diagonal in inches named d1.
Profit margin
If total sales for the month are $450,000 and the profit margin is 40%, how much was the cost of goods sold?
Using
Using the point-slope equation, find the equation containing (-7, 3) and slope m = -4
Two fifth
Two-fifths of the workers in a factory are men. The rest are women if there are 28 men. How many more women than men are there?

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