Math practice for 13 year olds - page 100 of 435
Number of problems found: 8682
- Which 12
Which table shows a proportional relationship between x and y? A) x 3 9 10 15 y 1 3 4 5 B) x 2 3 5 6 y 3 4 7 9 C) x 1 5 8 10 y 15 75 120 150 D) x 4 6 8 10 y 6 8 10 12 - Mac worked
Mac worked for 8 hours and earned 897.6 pesos. How much will he earn if he works for 6.5 hours a day for a week? - Transform 4
Transform to a positive angle in standard position: 24° west of north - Joanne 2
Joanne bought five fish. To have enough space, fish must have at least 30 liters of water. You know that the length is 5 dm and the width is 3 dm. Calculate the minimum height of the aquarium. - The distance 2
The distance between the two ports M and N is 2100km. If two ships travel towards each other, with one ship leaving port M at 20km/h and at the same time another ship from port N traveling at 15km/h. (I) How long will it take the two ships to meet? (ii) h - Rafael
Rafael has three squares. The first square has a side length of 2 cm. The second square has a side length of 4 cm, and its vertex is placed in the center of the first square. The last square has a side length of 6 cm, and its vertex is placed in the cente - The length 11
The length of a rectangle is four times its width. If the area is 100 m², what is the length of the rectangle?
- Sorting heights
Jack is taller than Sarah but shorter than both Malika and Tania. Malika is shorter than Tania. Natasha is shorter than Sarah. Who is the shortest? Write the first letter of their name as a result. - The length 10
The length of a rectangle is increased to 2 times its original size, and its width is increased to 3 times its original size. If the area of the new rectangle is equal to 1800 square meters, what is the area of the original rectangle? - A six-sided
A six-sided die is rolled once. What is the probability that the number rolled is an even number greater than two? - Ratios equation
Find the number x so that: 1:x=4:100 - Play the flute
There are 100 members 12 play the flute. What % that plays the flute? - Spirulina 74164
Spirulina seaweed contains 55% protein per 100 grams, i.e., 55 grams of protein. How many grams of protein are in 200 grams of spirulina? - Three trucks
There are places A and Y, three trucks, B, C, and D, respectively. Truck B is 60 km/h, C is 40 km/h and D is 80 km/h. Trucks B and C start at place A while D starts at Y. After D and B meet, two hours later, will D meet C. What is the distance between pla - Two teacher 2 Two teachers are paid 5100 USD together. If the teachers are to share this amount in the ratio of 3:7, how much does each receive?
- Mackie's
Mackie's income varies directly from the number of days that she works. If she earns 8000 pesos in 20 days, how much will she earn if she works three times as long? - Significant figures
How many significant figures are present in each of the measured quantities? A. 0.0012 B. 900.0 C. 108 D. .0012 E. 2006 F. 0.002070 - Preparation 73954
Ivana was preparing for Testing 9. On the first day, she calculated a quarter of all calculated tasks; on the second day, a sixth; on the third, a fifth; on the fourth, only an eighth; and on the last day, she solved 31 tasks. How many tasks did she recal - Amanda Amanda borrowed $5000 from two sources: her parents and a credit union. Her parents charged 3% simple interest, and the credit union charged 6% simple interest. After one year, Amanda paid $225 in interest. Thus, Amanda borrowed $5000 from both her parent
- The distribution
The distribution of an office payroll of a certain company was as follows: 1/9 for technical assistants; 1/6 for executives; 2/15 for the accounting force and The rest is for the general clerical service. How much was allotted to each group if the total p
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