Math practice for 13 year olds - page 140 of 434
Number of problems found: 8670
- Hectares 54981
The actual area of the square garden is zero whole zero, 875 hectares. How many meters of mesh will Mr. Novák need to fence it if a gate 80 cm wide and 2 m high leads to the garden? - Engineering 54971
Two engineering companies have the same production program. The first company would fulfill their orders in 20 days. The second company in 16 days. How long will the companies fulfill the order if the first company starts working 2 days earlier? - Determine 54881
On the tourist map with a scale of 1:50000, the section of the railway line between Bobrová Lhota and Javořiště is replaced by an arc of a circle with a radius of 6 cm. The arc is 90°. Determine the actual length of the track between the two villages. - Rectangular 54871
The arranger has at his disposal a certain number of colored targets, from which he wants to create a rectangular pattern of a flower bed. If he puts 4,5,6,8,9, or 10 targets in one row, he always has three extra targets. How many targets does it have? De - Aspect ratio
Determine the length ratio to the width of a picture frame that is 12 3/4 inches long and 8 1/2 inches wide. - Parallelogram 54791
Construct triangle ABC if c = 5cm, b = 7cm and a = 4cm. Then create a parallelogram axially symmetric with the line AC. Measure the size of the second diagonal of this quadrilateral. - Strawberries
Three people pick strawberries from 48 rows in 8 hours. How many hours do five people need to pick strawberries from 20 rows?
- Lucka
Lucka reads a thrilling novel about the holidays. She would read the book one day earlier if she read 16 pages daily instead of 14. How many pages does the novel have in total? - Stop
Three trams pass through the stop on Malé náměstí. Tram number 9 arrives regularly at eight-minute intervals, train number 12 stops at the stop every 10 minutes, and the third tram line number 13 stops at the stop every 12 minutes. How many times will all - Colorado
The state of Colorado is a rectangle. The map is sold on two posters. The first has 70 cm and 50 cm dimensions on a scale of 1:1,000,000. The second poster has dimensions of 175 cm and 125 cm. What is the scale of the second poster? - Three animals
Ramrao bought a cow, a buffalo, and an ox for a total of Rs 85,000. The ratio of the price of a cow, buffalo, and ox is 4:8:5. What is the price of an ox? - Wonderland
The cost of admission to Wonderland is 51.75. each bus we take costs 267.50 and holds 48 passengers. Suppose three classes of 27 and their teacher wanted to go. How much would they need to fundraise? - Buying receipt
Fahima buys 2 packets of bread rolls costing £1.50 for each packet One bottle of ketchup costs £1.60 Three packets of sausages Fahima pays with a £10 note. She gets a 30p change. Fahima works out that one packet of sausages costs £2.30. Is Fahima right? - The bricklayer
The bricklayer built a six-meter base of the fence in 3 hours. How long does it take to build a 14 meters long base? - Dimensions 3
The perimeter of a rectangular field is 96 meters. The length is four meters less than three times the width. Find the length and width (its dimensions).
- Multiplied 54601
What number, when multiplied by 3/5 for the product to be 1? - Specify 54591
Specify a number whose 2/3 equals -1/2 - Mass fraction
Two teaspoons (24 g) of sugar are dissolved in a cup with 500 g of tea. Calculate the sugar content by weight in the tea. - Salami 54461
500 g of salami costs 4.2 euros. How much do we pay for 0.75 kg of salami? - Arithmetic 54441
The arithmetic mean of the six numbers is precisely 9.5. The sum of these five numbers is 56.9. The sixth number is?
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