Divisibility - practice for 9 year olds
Number of problems found: 7
- Arithmetic progressions.
Find the sum of all the numbers between 9 and 204, which is exactly divisible by 3. - Four-digit 63154
In entry 85 * 0, replace the asterisk with a number to give the smallest possible four-digit number divisible by 4. - Difference 4779
What is the difference between the largest and smallest numbers, composed of only odd digits and none of the digits repeated in the numbers? - Thinking 4586
I'm thinking of a number that doesn't belong to the group. Please find it, justify the choice, and divide it by 9. 36,54,56,80,72,64,42,18,24,32,90,48,28,99. - 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? - Czech crowns
Oldrich has one crown. Peter has five crowns coin, a two crown coin, and a one-crown coin. Radek has a twenty-crown banknote, ten banknotes, and a five-crown coin. The boys got one fifty-one crown and one crown coin. How can they share the money fairly wh
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