Math practice for 13 year olds - page 233 of 425
Number of problems found: 8487
- Horizontally 11201
A boy weighing 50 kg moves horizontally by 10 m. How much has his positioning energy increased? - Geography tests
On three 150-point geography tests, you earned grades of 88%, 94%, and 90%. The final test is worth 250 points. What percent do you need on the final to earn 93% of the total points on all tests? - Aunt Rose
Aunt Rose gave $2500 to Mani and Cindy. Mani received $500 more than Cindy. How much did Cindy receive? - Year 2020
The four-digit number divided by 2020 gives a result of 1, **. (Can not be in form 1,*0. ) Write all the options. - Gutter pipe
How many m² of sheet metal is required to produce a 12 m long and 18 cm wide gutter if a 7% bend is required? - Cylinder 11141
The area of the cylinder shell is 300 cm², the height of which is equal to the diameter of the base. Find the surface of the cylinder. - The cuboid
The cuboid is full to the brim with water. The external dimensions are 95 cm, 120 cm, and 60 cm. The thickness of all walls and the bottom is 5 cm. How many liters of water fit into the cuboid? - Discount and prices
After a 29% discount, the new product price was € 426. What was the original price of the product? - Three-digit 11041
How many three-digit numbers can be composed of 0.5,9 digits? - The sum 4
Robin's total age is 45. Seven years ago, Robin was 16, more than half as old as Bruno then. How old is Bruno? - Sale off The TV went down 10% and then again 10% off the original price. Now it costs 300 €. What was its original price?
- Kilowatt-hours
If the Lewis family used 648 kilowatt-hours of electricity in 12 days at the same usage rate, how many kilowatt-hours should they use in 24 days? - In center
What number lies in the center between a quarter of a fifth and a half of a third on the number axis? - Two chords
Calculate the length of chord AB and perpendicular chord BC to the circle if AB is 4 cm from the circle's center and BC 8 cm from the center. - Bike ride
Marek rode a bike ride. In an hour, John followed him on the same route by car at an average speed of 72 km/h, and in 20 minutes, he drove him. Will he determine the length Marek took before John caught up with him, and at what speed did Marek drive? - Divide candies
John, George, and Adam shared candies in a ratio of 2:3:1. John received six candies. How many candies did the boys share? - The cylinder 2
Find the volume and the lateral area of a cylinder with a height of 12 inches and a base radius of 4 inches. - Calculate 10691
Calculate the length of the side of a square whose diagonal has a length of 10 m. - Butter fat
A quarter of a kg of butter contains 82% fat. How many grams of fat are in four cubes of butter? - Potatoes 10581
Potatoes contain 76.1% starch. How much starch does 250g of potatoes contain?
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