Examples of equations for practice for 12 year olds - page 16 of 59
Number of problems found: 1180
- One-fifth 42071
One-fifth of twice the number t is one.
- Family age
Kubo is 14 years old and has a one-year-old sister, Nina, and a four-year-old brother, Sam. In how many years will Nina and Sam be as old as Kubo?
- Pilgrimage 41951
Pavel spent CZK 315 on the pilgrimage in three days, doubling his spending every following day. How much CZK did he pay on the first day?
- Miguel
Miguel and Kat are reading the same book. Miguel reads the book three times as many pages as Kat. Together, they read 48 pages. Write an equation that we can use to find how many pages Kat read.
- Jordan
Jordan wants to bring in cookie cakes to share with his 23 classmates for his birthday. His mom is willing to buy up to six cookie cakes, and Jordan must share the cakes equally with his classmates (and himself). Answer the questions to help Jordan decide
- Apples investment
The merchant bought a certain amount of apples and paid one denarius for every seven apples. The next day he sold all the apples for one denarius for five pieces and earned 12 denarii. How many apples did he originally buy, and how many did he have to inv
- Determine
Determine the salary of a part-time worker if the employer deducted (taxes, etc.) 840 euros from him, which was 6/50 of his salary.
- Circumference 40401
Calculate the diameter of a circle whose area in cm² and the circumference in cm are expressed by the same number.
- Graduates 40111
As many as 62.5% of residents at the business academy graduated with honors. How many high school graduates would there be if 30 students graduated with honors?
- Two-fifths 39881
Jarmila bought a book for two-fifths of her money, leaving her with CZK 75. a) How much CZK did Jarmila initially have? b) How much did the book cost?
- Five-twelfths 39871
Five-twelfths of the students in the class learn English, a third learn German, a sixth learn French, and two students learn Russian. How many students are in the class, and how many languages are they learning?
- Together 39671
Three workers were to lay the parquet floor. If everyone worked alone, the first would finish the job in 30 hours, the second in 24 hours, and the third in 20 hours. How long will they do the floor if they work together?
- Unknown number
If we subtract three from the unknown number, we get just as much as if we subtract seven from the unknown number and we multiplied the result by 2.
- Replied: 39523
Dalibor asks Ondra: 'Ondra, how many crowns do you have?' Ondra replied: "If I added another CZK 200 to my money, I would have six times more than now." How many crowns does Ondra have?
- Determine 39503
In a right triangle, one acute angle is 20° smaller than the other. Determine the size of the interior angles in the triangle.
- Transport 39383
The online store offers free shipping when you buy five or more products. The price of transport is 100 crowns. When you buy five products without shipping, we pay the same amount as when you buy three products with shipping included. How much does 1 piec
- Find unknown 2
Find unknown denominator: 2/3 -5/? = 1/4
- Škoda cars
At 8:30 AM, car Škoda 120 started from Prievidza at 60 km/h toward Bratislava. At 9:00, we started from Prievidza in the same direction as Škoda Rapid at 90 km/h. Where and when will Škoda Rapid catch up with Skoda 120?
- The caravans
At 6:00 in the morning, a caravan set out of the oasis at a speed of 1.5 miles per hour. Two hours later, a second caravan followed her at 2.5 miles per hour. When did the faster caravan run slower? How far from the oasis?
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