Examples of equations for practice for 13 year olds - page 17 of 98
Number of problems found: 1958
- Add number
Suppose the same number is added to the one near raider and denominator of math fractions seven and nine. The result is .9. What is the number? - A Piece 6
A piece of material measures 40 inches. Sara cuts the material into two pieces, one measuring 14 inches. Write an addition equation that we could use to find the length of the other piece of the material. - After 6
After buying half a dozen eggs, three cans of sardines, and a pack of milk, Enya received a change of P0.50 from her P200. The pack of milk costs P105, and a can of sardines costs P16.50. How much is the price of an egg? - Tanya
Tanya bought three adult tickets and one children's ticket to a movie for $22.10. Li bought five adult tickets and four children's tickets for $43.60. Find the cost of one adult ticket and the cost of one children's ticket.
- Score on tests
On the first six tests in his Mathematics subject, his scores were 92, 82, 86, 93, 96, and 91. If he took the seventh test and raised the mean of his scores by exactly one point, what is his score on the 7th test? - Henry
Henry has scored 72, 67, 82, and 79 on his Algebra tests. Use an inequality to find the scores he must take on the final exam to pass the course with an average of 77 or higher, given that the final exam counts as two tests. - Jen and Steve
Jen and Steve plan to read a series of famous books. Jen has already read ten books and will continue to read three books per week. Steve, who hasn't started reading the series yet, will read four books per week. How long will it take for Steve to be read - Eddie
Eddie and Fran are scuba diving. Eddie is 35 meters below the surface of the water, and Fran is 8 meters directly above him. The following equation describes this situation: -35 + 8 = -27 What does -27 tell us? Choose one answer: ... - Dividing money 6
P 49,000 is to be divided among three children, X, Y, and Z. If X will receive double that of Y. Y will receive double that of Z, how much will Z will receive?
- I bought 2
I bought two bottles of alcohol and two sanitizers for Php126. How much is a bottle of alcohol if the cost of alcohol is five times the cost of sanitizer? - Six numbers
The average of 6 numbers is 3.95. the average of two of them is 3.4, while the average of the other two is 3.85. What is the average of the remaining two numbers? - Fuel volume
1/2 of a tank is filled with oil when 36 liters are removed, and the remaining oil fills 1/10 of the tank. What fraction of the total is the amount of oil removed? - Weighted-average
Calculate the weighted-average cost of the following inventory purchases: Date Quantity; Purchased ; Cost per Unit May 4; 33; $12.25 May 11; 41; $13.87 May 29; 37; $11.99 - Sari-sari store
Ms. Rona bought 25 kg of sugar for her sari-sari store. She then repacked the sugar into ¼ and ½ kg. If Alica packed 30 pcs of ½ kilograms of sugar, how many ¼ kg of sugar did she pack?
- A total
A total of 200 cash consists of 1-peso, 5-peso, and 10-peso coins, their values being in the ratio of 80:C:50. Find the ratio (in terms of quantity of coins) of 5-peso coins to 1-peso coins. - Ivan rented
Ivan rented a truck for one day. There was a base fee of $14.95, and he drove an additional charge of 73 cents for each mile. Ivan had to pay $114.96 when he returned the truck. For how many miles did he drive the truck? - The product 8
The product of five and the difference of triple the number and three is 25. Find the number. - A Shopkeeper 4
A Shopkeeper gave a bill to a customer. The bill was in two digits but was mistakenly interchanged, thereby undercharging the customer by $45.00. If the sum of the digits is 9, find the actual value of the bill. - A cuboid 2
A cuboid with a depth of 4 cm but a length and width of x cm is cut out from one corner of the original cuboid as shown (the original cuboid has dimensions of 10x8x4 cm). The remaining shape has a volume of 199. Calculate the value of x.
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