Math practice for 13 year olds - page 135 of 434
Number of problems found: 8668
- Divide in ratio
What is 75 in the ratio of 2:3? - Eq1
When the product of two less than three times a number and four is subtracted from nine times the number, the result is eight more than five times the number. What is the number? - Resistance 58091
Does the copper conductor have a resistance of 2.8Ω at 36 °C? What will be the resistance value after cooling to -22 °C? - Cooker spiral
A current of 4.4 A flows through the spiral of the electric cooker. It is connected to a voltage of 220 V. What is the resistance of the spiral? - Children 58031
The children talked about how they spent the holidays at school. 2/3 of them were on holiday with their parents. There were ten children by the sea, which is 5/8 of those who were on vacation. How many children are in the class of children? - Acceleration 58021
The runner reaches a speed of 30 km/h after 3 seconds from the start. Determine its acceleration. - Squares
Cut out the square with the integer side from the square with the integer side so that the residual area is 100. What is the longest possible side of the larger square?
- All needs
All need a mean score of 92 or higher on four texts to get an A. So his scores are 94. 90. and 84 What score on the fourth test will get him an A? - Power consumption
The price of electricity is ₱6.50 per kilowatt hour (kWh). How much electricity was consumed if a television with 120 W power consumption ran from 7:30 AM to 12:30 PM? How much will this cost? - Alica
Alica went to the market and bought two sacks of 50 kilograms of rice, which cost P2,200.50 per sack. She wants to sell it in her grocery store at P48.50 per kilo. How much is her profit? - The temperature 18
The temperature at 12:00 PM was 43°F. Over the day, the temperature decreased by 3.5°F per hour. What was the new temperature at 6:00 PM? - Possibilities 57821
How many different positions can there be in the first three places in the hockey world championship if 12 teams are playing in them? How many possibilities exist if we are only concerned with which teams will be on the podium? - Discount
If someone gives you a discount on "X" at 5% for 60 days. Then the discounted amount is 80000. find the actual amount? Discounted Amount=80000 rate=5% Period=60 days Actual amount=? - The sales 2 The sales tax in your city is 8.8 percent, and an item costs 55 USD before tax. How much tax would you pay on that item?
- Full tank
Jakub pumps a full tank into his motorcycle and leaves. On the way to the city, it consumes 11/16 tanks and back 3/5 of the rest. What percentage of the fuel will remain in the tank?
- What is 14
What is (-2)4× 34? - Sqrt between ints
Which two consecutive integers does the square root lie in? * √45 √23 √71 √7 √86 - Two angles 2
Two angles of a triangle have the same measure, and the third one is 45 degrees greater than the measure of the other two. Find the measure of the largest angle in the triangle. - Two places
The actual distance between the two places is 105 km. Find the scale of the map on which this distance is marked by a line 1.2 dm long. - Tourist 57513
The tourist map has a scale of 1:40 000. Find the actual length of the trip, which is marked on the map by a 7 cm long line.
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