Maths practice for 11-year-olds. - page 151 of 191
Number of problems found: 3801
- Rectangular 3941
Petra invited her friends Olga and Pavel to sew. Olga sewed three tablecloths, Pavel 2 and Petra 5 rectangular napkins measuring 39 times 30 cm. Was it enough for them to decorate 15 meters of ribbon? - Lcm simple
Find the least common multiple of these two numbers: 140 175. - Beginning 3930
Roland has 490 balls. If he gave 145 bullets to Marek, he would still have 100 more bullets than Marek. How many balls did Marek have at the beginning? How many shots do they have together? - Fractions 3928
Arrange the fractions from the smallest to the largest. 2/5, 15/6, 1/4, 5/5, 5/4, 4/10, 6/5.
- Rails
18 m railway weighs 1260 kg. How much weighs 100 m of welded railways? - Mathematical 3918
For the variables x = -8, y = 12, z = -5, evaluate these two mathematical expressions a = y-z b = z / (x-z) - Centimeters 3913
Calculate the diagonal of a square whose area equals 625 square centimeters. - Fluid
We have vessels containing 7 liters, 5 liters, and 2 liters. The largest container is filled with fluid, the others empty. Can you only get 5 liters and two 1 liter of fluid by pouring? How much pouring is needed? - Clotheslines
Mommy needs six clotheslines 360 cm long. Clotheslines are sold in the length of eight meters. How many of these clotheslines must buy mom if any does not want to be connected? How much does mommy pay for the clotheslines when one piece costs 24kč?
- Millimeters 3903
The surface area of one cube wall is 2500 square millimeters. Determine the cube's surface, the length of its edge, and its volume. - Cube 5
The surface area of one cube wall is 32 square centimeters. Determine the length of its edges, its surface, and volume. - Cube edge
Determine the cube's edges when the surface is equal to 37.5 cm square. - Expression: 3895
Specify the value of the expression: (27^-1) · 9³ - Equal 3883
What is equal to twice the sixth root of 729?
- Change the numbers in the ratio
Change the numbers 29, 38, and 43 in a 3:4 ratio. - Unknown number 5
Daniel thinks of an integer. When he change this number at a ratio of 2:5, he got the number 2.8. Determine what number Daniel thinks. - Determine 3860
1/6 of y equals 8.6. Determine y. - Passengers 3859
Fifty passengers boarded the train at the station. And 79 passengers left it. Find out if more or fewer passengers continued to travel on this train, and about how much. - Unknown number 6
Determine x if 1/6 of x equals 2/5 of the number 24.
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