Basic functions - practice for 12 year olds
Number of problems found: 1537
- Painter 83225
A painter needs to mix yellow and red paint in the ratio 3 : 7. How many liters of red paint must he add to 21 liters of yellow paint? - Gallons of gas
Sara drives 171 miles on 7.6 gallons of gas. She uses this information to calculate how many miles per gallon she can drive. Using this result, how many miles can Sara drive on 12.5 gallons of gas? - Kilograms 83037
8 kg of butter is made from 20 hl of milk. How many kilograms of butter can be made from 450 l of milk? - Statuette 83001
The bronze figurine weighs 0.5 kg. Bronze is an alloy of tin and copper in a ratio of 1:4. How many grams of copper and how many grams of tin does the statuette contain? - Marbles 82974
The bag has 5 red, 7 white, 10 yellow, and 6 black balls. At least how many marbles must be drawn from the bag to ensure that there will be 3 yellow ones among the drawn balls? - One group
In a meeting of 100 people, there are 45 women, what fraction of the number of the meeting are men. - Operation 82150
In 24 hours, the engine consumes 346 I of gasoline. How many liters does it consume in 126 hours of operation? - Tax bill
What is the tax bill for a contractor if his shop has an assessed valuation of $75,000, and the tax rate is $27.50 per thousand dollars of assessed valuation? - Applies 81948
From a rented house worth 1.25 million CZK, the owner will receive an annual rent of 6.5% of the house price. 20% tax applies to the rent. How much CZK will the owner have from the rent per year? - Subtracting 81925
Three horses will eat 36 kg of oats in two days. How many kilograms do 5 horses need for 4 days? Help yourself by adding or subtracting. - Time vs pizza
If Mr. Cromleigh can eat 1/4 of a pizza in 1/6 of an hour, how many pizzas can he eat in one hour? He can eat ____ pizzas. - A farmer
A farmer produces apples and pears in a ratio of 7:6. If she harvests 42 tonnes of apples, how many tonnes of pears does he produce? - Increase 81782
What ratio must we increase to 1 m to get 1 m 50 cm? - Adjust 81781
Adjust ratio 1.6:0.8 - Paycheck
Alex automatically deposited 70% of her weekly paycheck into a savings account. This week, $35 is deposited. Alex wants to know the total amount of her paycheck this week. - Black to brown ratio
In a box, there are 20 pairs of socks, of which 65% are black and the rest are brown. What's the ratio of black and brown socks? - Garden 81614
The garden is drawn on a scale of 1:200. In what ratio are the real area of the garden and the area of its image? - Proportion 81593
Express the ratio. There are 12 boys and 16 girls in the class. a) In what ratio is the number of girls to the number of boys? b) In what proportion is the number of boys to the total number of pupils? - Performance 81586
The performance of three lathes can be expressed by the ratio 3:5:8. The most powerful lathe produces 136 shafts per shift. How many shafts did each of the remaining lathes make per shift? - A merchant 2
A merchant bought some items for P175.00 a dozen less 20% and sold them at a profit of 35% of the selling price. What was the selling price of one item?
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