Examples of equations for practice for 13 year olds - page 25 of 98
Number of problems found: 1958
- 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? - 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=? - Fifteen-spruce 57291
A mighty gale broke the top of the fifteen-spruce spruce, resting it on the ground. The distance of this top from the trunk was 4.6 m below. At what height was the spruce trunk broken? - What is
What is the circumference of an isosceles trapezoid with an area of 106.75 cm²? The lengths of the sides are in the ratio of 1:3:2:1, and the bases are 6.1 cm apart.
- Production plan
The annual production plan was exceeded by 2%. If production were higher by 300 products, the plan would be exceeded by 5%. What was the annual production plan? - Difference 56811
I think the number. The difference between nine times and four times the unknown number is 625. What number do I think? - Sharing money
A certain sum of money is shared in the ratio 2:3:9. If the difference between the first and the second is $40, then the amount of money shared is - Gas prices 2021
According to the SPP price list in 2021, the price of natural gas, together with its supply, is as follows: D1 - we cook. Fix 3.34 euros/month and 0.0479 euros/kWh (1 cubic meter of gas is approximately 10.555 kWh. It is called combustion heat and changes - Four-digit 55481
Find all four-digit abcd numbers to which: abcd = 20. ab + 16. cd, where ab and cd are double digits numbers from digits a, b, c, and d.
- Construction 55441
By improving the work process, constructing a family house saved CZK 111,600, which was 5% of the total budget. What was the original budget for a family house? - Marshall
Marshall earns a salary of 36,000 each year and receives a $4000 raise. Jim has a salary of 51,000 yearly, receiving 1500 bonuses. How many years will it take before Marshall and Jim are on the same salary? - A concert
A concert will take place at the stadium. If they sold 1/4 ticket on the first day, 2/5 of the rest on the second day, and 17,100 tickets left in the box office. What is the capacity of the stadium? - KOH
How many g of 20% KOH solution do we need to mix with 500 g of 30% KOH solution to obtain a 25% KOH solution? - Engineering 54971
Two engineering companies have the same production program. The first company would fulfill their orders in 20 days. The second company in 16 days. How long will the companies fulfill the order if the first company starts working 2 days earlier?
- Lucka
Lucka reads a thrilling novel about the holidays. If she read 16 pages daily instead of 14, she would read the book one day earlier. How many pages does the novel have in total? - Multiplied 54601
What number, when multiplied by 3/5 for the product to be 1? - Arithmetic 54441
The arithmetic mean of the six numbers is precisely 9.5. The sum of these five numbers is 56.9. The sixth number is? - A class IV.C
In a class, 2/5 were boys. Thirty were girls. How many more girls than boys are there? - Over fraction
Solve an equation: p over 5 equals fraction numerator 7 p over denominator six end fraction plus 5.
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