Maths practice for 11-year-olds. - page 194 of 229
Number of problems found: 4580
- Bus lines
Bus connections start from the bus stop on its regular circuit: No. 27 bus every 27 minutes and No.18 bus every half hour. If the bus stop meets at 10:15 a.m., what time do these two bus lines run?
- Assistance 2977
At what speed must an ambulance travel to a traffic accident if medical assistance is provided within 20 minutes? The accident is 22 km from the ambulance station, and the witness was on the phone 5 minutes after the accident.
- Calculate 2976
Calculate the least common multiple of 120, 660, and 210.
- Cakes
Grandmother baked cakes. Half of it was poppy, a quarter with plum jam, and 16 cheesecakes. How many cakes did she bake in total?
- Sum and rounding
I know two numbers whose sum is 20. When each round and then added together, I get the 30. What are these numbers?
- Circle area
Calculate the circle area with a radius of 1.2 m.
- Circumference 2951
What is the radius of a circle with a circumference of 28 cm?
- Diameter 2949
What is the diameter of a circle with an area of 35 cm square?
- Calculate 2948
Calculate the length of a circle with a diameter of 7 cm.
- Calculate 2946
The block's surface area is 94 cm². The lengths of its two edges are a = 3 cm and b = 5 cm. Calculate the length of its third edge. Let's say: From the formula for the block surface, first calculate c.
- Cylindrical 2945
The cylindrical plastic container has a bottom diameter of 2 dm. How tall must the container be to hold 5 liters of water?
- Determine 2944
Determine an unknown number. Its double is equal to its triple less 1.5.
- Tablecloth
The table top is 90 cm long and 50 cm wide. How many cm of lace edging is necessary for the tablecloth that hangs on each side by 10 cm?
- Measuring 2942
Mr. Svoboda has 25m of carpet tape at home. He wants to hem the carpet measuring two times 2m and three times 4m. Does he have enough tape?
- Additional 2941
If the amount for the last text messages in one month with the mobile operator MOBY exceeds 14 euros (it costs 50 cents), each additional text message costs 13 cents. a) From what time does the price of a text message become 13 cents? b) How much does it
- Foot in bus
It was 102 people on the bus. Twenty-eight girls had two dogs. Eleven girls had one dog. Five dogs (even with their owners) seceded at the next stop. They got two boys together with three dogs. The bus drove one driver. How many feet were on the bus?
- Mathematical 2928
Write any numeric expression whose value is 100 and will contain at least four different mathematical operations.
- Dependence 2927
Sound travels in the air at a speed of about 330 m/s. Make a table of the dependence between the time (after one second), and the sound's distance travels during this time. During a storm, you can easily find out how far you are from it.
- Even / odd numbers
a / Using variable n, write two consecutive odd numbers. b / The sum of three consecutive odd numbers is 333. What are these numbers?
- Moneys in triple ratio
Milan, John, and Lili have a total of 344 euros. Their amounts are in the ratio of 1:2:5. Determine how much each of them has.
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