5th grade (10y) + natural numbers - examples
One brick is 6 kg and half a brick heavy. What is the weight of one brick?
Randy bought 6 same chocolates for 6 Eur. How many euros will he pay for 25 chocolates?
Is the number 761082 exactly divisible by 9? (the result is the integer and/or remainder is zero)
Monkey fell in 38 m deep well. Every day her scramble 3 meters, at night dropped back by 2 m. On that day it gets hangover from the well?
We know little about this Greek mathematician from Alexandria, except that he lived around 3rd century A.D. Thanks to an admirer of his, who described his life by means of an algebraic riddle, we know at least something about his life. Diophantus's youth l
After check of textbooks found that every 10-th textbook should be withdrawn. Together 58 textbooks were withdrawn. How many textbooks were in stock before withdrawn and how many after withdrawn?
33 weeks is equal to how many days?
Cherries in the bowl can be divided equally among 8 or 10 or 11 children. How many is the minimum cherries in the bowl?
Jane on birthday brought 30 lollipops and 24 chewing gum for their friends. How many friends has, if everyone receives the same number of lollipops and chewing gums? How much chewing gum and lollipops got any friend?
How many times should be broken chocolate consisting of 10 × 12 pieces to get the 120 parts?
- Pension or fraud
Imagine that your entire working life working honestly and pay taxes and to Social Insurance (in Slovakia). You have a gross wage 730 Euros, you pay social insurance (you and your employer) monthly € 256 during 42 years and your retirement is 365 Eur.
- Roman numerals
Write numbers written in Roman numerals as decimal.
Nicol mistake when calculate in school. Instead of add number 20 subtract it. What is the difference between the result and the right result?
- Primes 2
Which prime numbers is number 2025 divisible?
- Children in the classroom
How many children are in the classroom, where Ladislav is 10th lightest and 16th heaviest in class?
When Pythagoras asked how many students attend the school, said: "Half of the students studying mathematics, 1/4 music, seventh silent and there are three girls at school." How many students had Pythagoras at school?
27 students of 6.D class is going to a trip. They pay 9 € each. The teacher got 153 €. How many children have not paid?
The teacher paid for 280 Kč for 4.A students for admission to the exhibition. How many students were on the exhibition?
- Bus driver
The bus driver rides 174 km in the morning, afternoon rides 26 km more. How many kilometers traveled in 5 days if he rides on the same line?
- Number train
The numbers 1,2,3,4,5,6,7,8 and 9 traveled by train. The train had three cars and each was carrying just three numbers. No. 1 rode in the first carriage, and in the last carriage was all odd numbers. The conductor calculated sum of the numbers in the first