Math practice for 13 year olds - page 138 of 414
Number of problems found: 8275
- The ratio 7
The ratio of the sides of two squares is 4:5. If the sum of their areas is 180 cm². Find the sides of the two squares. - What percent 4
What percent of 40 is 14? - Three languages 2
Participants of a congress may present their contributions in English, Italian, or Spanish. Each of the 120 participants knows at least two of these languages, and 10 participants speak all three languages. English and Spanish is spoken by exactly as many - Calculate
In one class, each of the 30 students speaks either English or German. Three of them speak both languages. Those who speak only German outnumber those who speak only English by three. Using a Venn diagram, calculate: How many students speak English? How m - Cylinder S,V
What is the volume and surface area of a cylinder whose base has a diameter of 3.15 cm and a height of 25 cm? - The morning
The temperature rose 9 degrees from 10:00 AM to noon. By 3:00 PM, the temperature had doubled. From 3:00 PM to 6:00 PM, the temperature rose 4 degrees to 96 degrees. What was the temperature at 10:00 AM that morning? - Joseph tooth loss
Joseph has five teeth. He'll lose half a tooth in 3 days. How many teeth did he lose in 5.3 days? - Directly and inversely
If z varies directly as x and inversely as y, and z = 16 when x = 3 and y = 2, find z when x = 5 and y = 3 - Jointly function
If z varies jointly as x and y, and z = 12 and x = 2 and y = 4, find z when x = 5 and y = 2 - Planting
The eighth graders took part in the planting of saplings in the forest for four days. On Monday, they planted a quarter of all the saplings they were supposed to plant. They planted a third of what they had left from Monday on Tuesday. On Wednesday, half - The ratio 6
The ratio of cats to dogs is 2 to 5. If there are 35 total animals in the shelter, how many dogs are there? - Fruits 6
Ten mangoes, six guavas, and eight chicos are in a basket. What part of the total number of fruits are guavas? - Janna
Janna takes her medicine three times a day. If 2 1/2 ml is taken each time, how many days will a 60 ml medicine last? - Find two 2
Find two decimals between 4.56 and 6.927 so that the difference between any two consecutive decimals is the same. - A sum 2
A sum of money is divided between Laura and Joan in the ratio of 2:3. Laura gets 8 pesos. How much did Joan get? - The product 5 The product of two numbers is 250. One factor is 1/10 of 250. What is the second factor? What is the reciprocal of 1/10 of 250?
- A pair
A pair of shoes costs $52.99, and the sales tax is 8%. Use the formula C = p + rp to find the total cost of the shoes, where C is the total cost, p is the price, and r is the sales tax rate. - Highway
A stretch of highway 12 1/4 kilometers long has speed limit signs every 7/8 of a kilometer. How many speed limit signs are on this stretch of highway? - Commission rate
George sold a house and lot worth Php 2,000,000.00. If the owner gave him Php 110,000.00 as a commission, what is the commission rate? - Turning machine
What is the smallest diameter of the cylinder so that a square prism with a side of 40 cm can be turned from it?
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