Maths practice for 14 year olds - page 93 of 378
Number of problems found: 7551
- Substitution 66204
Specify the value of the expression, (3x-5) / (2x + 1) if x equals the value that will be in the reader after substitution. - Flowing 66174
How long in an hour will a 30m, 15m, and 2m pool be filled with water flowing at 900l / min if it is 90% full? - Earlier 66144
If Petra read four pages more a day, she would read the book two days earlier than if she read six pages a day. How many pages does the book have? - Circumference 66134
The isosceles trapezoid ABCD has an area of 36 cm². One of its bases is two times longer than the other. Height is 4 cm. Calculate the circumference of the trapezoid. - Specific 66124
The numbers are arranged in a specific logical order. Fill in the missing numbers. 5, 8, 16, 15, 18, 36, 35, 38,??, - Mr. Bradshaw
Mr. Bradshaw is leaning a ladder against the side of his house to repair the roof. The top of the ladder reaches the roof, which is 5 meters high. The ladder's base is 1 meter away from the house, where Mr. Bradshaw's son is holding it steady. How long is - Resistances 66064
Two resistors with resistances of 40 ohms and 60 ohms are connected in series and connected to a voltage of 150V. A) the total resistance B) current in the circuit C) voltage on both resistors
- Summands 66044
Divide the number 6 into three summands x, y, z so that x: y = 4:3, y: z = 1:2. - Original 66004
They reduced the shoes by CZK 132 to 85% of the original price. How much did they cost before the discount? - Door-to-door 65904
The door-to-door seller of domestic apples sold 40% of the apples in the first household, 20% of the rest in the second, and 24kg in the third. How many kilograms of apples did the seller sell to the first two households together? - Manufacturers 65864
The grocery store has chickpeas in brine from two manufacturers, A and B. On a can from one manufacturer, it says: Solids weigh 240g, weighing 400g. The other manufacturer states: weight solid 245g, weight 410g. Which manufacturer sells canned food with a - Discount 65854
The TV fell first by 20%, then by 10%. How much did it cost after the second discount if: A) before the first discount cost 450eur? B) after the first discount, cost 450eur? - Percentage 65844
Mr. Josef sold home-grown potatoes at 79 cents per kilogram. When he had the last 5 kg, he told the customer: collect them all for 3 euros! By what percentage did Mr. Josef reduce the potatoes? - Reduction 65814
The Shop first reduced the tablet price by 10% and later reduced the new price by 20%. What was its original price after the tablet cost € 720 to double the reduction? - Numbers 65734 There are 100 tickets in a pocket with the numbers 1 to 100. What is the probability that we will randomly draw a ticket with a number starting with the number 5?
- Biggest 65704
The four boys shared the prize of 680 € in a ratio of 2:4:1:3. How many euros did the boy whose share in the prize was the biggest get? - Displayed 65694
Calculate the scale of the map, at which the actual distance of 12.6 km will be on the map as a distance of 2.52 cm. - Annual interest
If, after a year, at an annual interest rate of 3.8%, Mr. Slovak had 2,076 euros in his account, how many euros did he deposit in the bank? - Circumference 65674
The circumference of the triangle is 125 cm. The shortest side is 12 cm shorter than the longest side. The longest side is 7 cm longer than the middle side. How long is the middle side? - Trapezoid 65644 In an isosceles trapezoid, the base ratio a / c = 9/7, arm b = 10 cm, height v = 8 cm. Calculate the area of the trapezoid in cm².
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