Math practice for 13 year olds - page 39 of 365
Number of problems found: 7285
- The revenue
The revenue of Dr. Alban Bookstore increased from 1 500 000 pesos (in 2018) to 2 275 000 pesos (in 2019). What was the percent increase in the yearly revenue from 2018 to 2019? - Percent base
75% of 40 is 30. What is the base? - Percent decrease
77 to 59. Find the percent decrease. - Percent change 2
98.6 to 101.2; what is the percent change?
- Price 11
The price increased from $2.56 to $3.76. What is the percentage increase? - Iron ball 2
What is the mass of the iron ball with a diameter of 1,0 dm? The density of iron is 7870 kg/m³. . - A triangle 7
A triangle lot has the dimensions a=15m, b=10m, and c=20m. What is the measure of the angle between the sides of b and c? - A clock 2
A clock was set right at 6:00 AM. If it gains 3 1/2 minutes per hour, what time will it show at 6:00 PM on the same day? - Kilograms 84201
60 kg of fruit were divided into the KOP store and the FRESH store in a ratio of 2:3. How many kilograms did the FRESH store receive?
- A bicycle
Martin sold a bicycle at a profit of 10%. Had it been sold for 75 USD more, the profit would have been 16%. Find the cost price of the bicycle. - Originally 84156
The pants cost 9.90 euros, which is 90% of the original price. How much did the pants cost originally? - Thinking unknown n
I am thinking of a number. If I subtract 14 from it and multiply by 6, I get the number 210. What is the number I am thinking of? - Triangles - combinations
How many different triangles with sides in whole centimeters have a perimeter of 12 cm? - Horizontal 84047
A ladder is leaning against a wall at a height of 6.5 m. How long is the ladder if it makes an angle of 60° with the horizontal floor?
- Acceleration of a car
What was the initial speed of the car when, after accelerating 2 m/s², it gained a speed of 30m/s in 10 seconds? - Acceleration - free fall
How long will it take for a car to reach 180 km/h with an acceleration of 10 m/s²? - Hypotenuse 84015
In a right triangle ABC, the hypotenuse c = 8 cm and the side b = 4 cm. What is the size of angle α? - Hypotenuse of ABC
In a right triangle ABC with hypotenuse c, the hypotenuse a = 6 cm and sin α = 3/5. What is the length of the hypotenuse b? - Tickets 83964
9 tickets cost 153 CZK. How much do 11 tickets cost?
The least common multiple of 2190 and b is 13140. What is b?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
