Math practice for 13 year olds - page 123 of 415
Number of problems found: 8285
- Line ratio enlargement
A line segment 8 cm long is enlarged in the ratio 7:4. How long in centimetres will the new segment be? - Basketball team
The average height of the basketball team's starting five players is 196 cm. The tallest player is 216 cm tall. What is the average height of the remaining four players in centimetres? - Hexagonal prism volume
Calculate the volume and surface of a regular hexagonal prism with a height v = 2 cm and a base edge a = 8 cm. - Sandwiches
In a cafeteria, 1/6 of the students eat salads, and 2/3 eat sandwiches. There are 18 students in the cafeteria. How many students are eating lunches other than salads or sandwiches? - Expression value substitution
Specify the value of the expression, (3x-5) / (2x + 1) if x equals the value that will be in the reader after substitution. - Pool filling time
How long in an hour will a 30 m, 15 m, and 2 m pool be filled with water flowing at 900 l / min if it is 90% full? - Number logical sequence
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 - For last
Last week, the temperature varied by a total of 17 degrees over the course of the day. If the high for the day was 10 degrees, what was the low? (Write a number sentence and solve it.) - Starter current flow
Determine the current flowing through the car's starter, whose resistance is 60 milliohms at 12 V. - Resistor series connection
Two resistors with resistances of 40 ohms and 60 ohms are connected in series and connected to a voltage of 150 V. A) the total resistance B) current in the circuit C) voltage on both resistors - Handset voltage resistance
The handset has a resistance of 4000 ohms. Calculate what voltage is connected to them if the current passes 2.5 mA. - Shoe discount price
They reduced the shoes by CZK 132 to 85% of the original price. How much did they cost before the discount? - Class boy girl ratio
In the 9th grade, the ratio of boys to girls is 1:3. There are a total of 24 students in the class. How many boys and how many girls? - Apple seller households
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 24 kg in the third. How many kilograms of apples did the seller sell to the first two households together? - Chickpea can comparison
The grocery store has chickpeas in brine from two manufacturers, A and B. On a can from one manufacturer, it says: Solids weigh 240 g, weighing 400 g. The other manufacturer states: weight solid 245 g, weight 410 g. Which manufacturer sells canned food wi - TV discount price
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? - Potato price reduction
Mr. Joseph 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. Joseph reduce the potatoes? - Tablet double reduction
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? - Calculate cone - S,V
Calculate the surface and volume of a rotating cone, the base of which has a diameter of 6 cm and a height of 4 cm.
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