Maths practice for 12-year-olds - page 267 of 362
Number of problems found: 7227
- Bicycles
You're the owner of the transport's learning playground. Buy bicycles of two colors, but you've got to spend accurately 120000 CZK. The Blue bike costs 3600 CZK and the red bicycle 3200 CZK. - Hectoliters 4817
There are 1.5 hectoliters of rainwater in the barrel. Two-fifths of the water passed from the barrel while watering the garden. How many liters of water remained in the barrel? - Collected 4815
Pupils collected a total of 42 kg of apples. Peter harvests half as much as Zuzka and Martin, a third less than Petr. How much did each of them harvest? - School 6
Jirka lives 600m from the school, and Honzík 1200m. How many kilometers a week does Honzik go over Jirka on his way to school and back? How many times will more Honzík go than Jirka? - Earth and Sun
Earth is 150 million km away from the Sun. 300,000 km of sunlight travels in 1 second. How long will the light come from the Sun to the Earth? - Railway wagon
The railway wagon holds a 75 m³ load. The wagon can carry a maximum weight of 30 tonnes. What is the maximum density that may have material with which we could fill this whole wagon? b) How much peat (density 350 kg/m3) can carry 15 wagons? - Steps
The walkway from the house to the school is 180 m long. If Michael's step is 60 cm and his father's step is 90 cm, how many more steps does Michael make than his father on the way to school?
- Distance of numbers
Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis? - Bronze medal
To produce 1 kg of bronze must be 0.95 kg copper, 0.04 kilograms of tin, and 0.01 kg zinc. The bronze medal weighs 8.5 g. How much copper, tin, and zinc does the medal have? - Three-digit 4791 How many three-digit numbers divisible by four can we create from the numbers 1, 2, 3, and five if we cannot repeat the digits in the number?
- Ratio - proportion
Reduce the number 16 in proportion. 3:2 5:4 11:8 - Six-digit 4787 Which largest six-digit number has a digit sum of 27?
- Strawberries 4785
Friends Marika and Katka decided to prepare strawberry jam together. According to the recipe, they needed 50g of sugar for 0.5kg of fruit. How many kilograms of sugar must the friends prepare if they make jam from 2.3 kg of strawberries? - Equations 4781
Determine the smaller root of the root pair of the system of equations. 5a + 4b = 11 3a - 2b = 11 - Rectangular 4780
The television studio plan is made on a scale of 1:150. It shows a rectangular studio measuring 5 cm and 6 cm. If we pay 356 crowns for 1 m² of floating floor, how many crowns will we pay to cover the studio with a floating floor?
- Syringe and patient
In 1 ampoule of 2 ml is 15 mg of Dipidol. The patient should receive 10 mg. How much ml do I draw into the syringe? - Content 4774 There is 50 mg of Dolsin in 1 ampoule with a content of 1 ml. The patient should receive 70mg. How many ml will I draw from the second ampoule into the syringe?
- There
There are 24 students in the class. The math class is divided into two groups of 12 students on Friday. The table shows the results of pupil assessment in the two groups. Three students in the first group had worse grades than those in the second group. T - Strawberry 4769
They sold 4/7 strawberry ice cream and 36 servings of vanilla ice cream in the store. How many servings of ice cream did they sell that day? - Calculated 4765
The volume of the cylinder is calculated as V = 1/4 pi times d on the type times v. Express the average d using the volume V and the height in the cylinder. Calculate d for V = 1000 l and v = 23dm
Do you have unsolved problem that you need help? Ask a question, and we will try to solve it. Solving math problems.
