Percentages - practice for 13 year olds - page 9 of 56
Number of problems found: 1105
- Dimensions 81100
The area of the rectangle is 81.25 cm². If we increase its length by 5 mm, its area increases by 4%. Determine its dimensions. - Reduced 81099
A square has a side length of 25 cm. How big is its area if the side is reduced by 25%? - Windbreaker 81000
Before the season, the windbreaker became more expensive by 30% to the amount of 80.60. How much was it before the price increase? - Visitors 80966
The second weekend saw 20% fewer visitors than the first. Over the two weekends, the number of visitors was 27,500. How many visitors came on the second weekend?
- Interest 80867
How much is the deposit? Which at an interest rate of 3.75%p. a., will it increase by 25 euros in one year? - Perimeter 80853
The lengths of the sides of the triangle are in the ratio 7:6:4. The shortest side is 36 cm. What is the perimeter in cm of this triangle? - Discount 80806
Price before discount 250, after discount 200. Find discount by n% and discount to n%. - Fertilizer 80787
The fertilizer contains 15.8% nitrogen. Calculate the mass of fertilizer that must be added to the soil to make 17.0 g of nitrogen effective. Addition losses are 6.60%. - Organization 80743
The apprentice came to his master with an improvement proposal, and with better work organization, we will reduce costs by 45% this year, 30% next year, and 25% the following year. The production won't cost us anything. Has the apprentice received a rewar
- Percentage 80721
Calculate what percentage is €37 from €49. - Hibernation 80718
The bear weighed 410 kg at the beginning of winter and lost 10 percent during hibernation. He gained 10 percent of his weight from spring to fall. Find out if the bear's weight was greater at the beginning of winter or autumn by what percentage. - Percentage 80710
Calculate what percentage is 12€ of 60€. - Crossbars 80697
Calculate the length of the middle crossbars in an isosceles triangle if the length of the arm is 52mm and the base height is 48mm - Sweaters 80695
Out of 400 sweaters, 5% are second quality, and the rest are first quality. How many sweaters are of first and second quality?
- Roland
Roland repairs and sells broken furniture. He pays $300 for a gaming chair and sells it for $408. What is his percent markup? - Inflated
By the time a man decided to buy a house, the cost had inflated by around 8% to £182,000. What was the approximate price before inflation? - A dress
A dress regularly sells for $75. The sale price is $58. Find the percent decrease in the sale price from the regular price. - Mathematics 80583
Can it be 1%>2%? Can't it be nonsense and a denial of the law of mathematics, yet 119 out of 120 people say so? - One-nineth as percent
What is 1/9 as a percent? Round to the nearest hundredth. .
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