# Examples for 5th grade (the fifth graders) - page 15

- Brick

Brick weight before drying is 5.3 kg. After drying, the bricks is 1 kg lighter and after firing is 0.7 kg lighter than after drying. What is the weight of the brick after drying and firing? - Expression 1

What is 7+8-(5×2)+5-4+(6×(5-3)+6)-(8+10)-7+6? - Add symbols

Add marks (+, -, *, /, brackets) to fullfill equations 1 3 6 5 = 10 This is for the 4th grade of the primary school - with no negative numbers yet - Rectangle

Draw a rectangle with the sides a = 4 cm, b = 5 cm. Mark the center of symmetry S and all axes of symmetry. How many axes of symmetry has? Write down. - Alarm clock

The old watchmaker has a special digital alarm in its collection that rings whenever the sum of digits of the alarm is equal to 21. Find out when the alarm clock will ring. What is their number? List all options ... - Fence

Square garden has an area of 537 m^{2}. How many meters netting is necessary to fence the garden? - Bus

On the 4-th stop take on 56 and take off 38 passengers. How many were added (write as positive number) or shrunk (write as negative number) the count of passengers? - Paper collecting

At the paper collecting contest gathered Franta 2/9 ton, Karel 1/4 ton and Patrick 19/36 tons of paper. Who have gathered the most and the least (x, y - write down the weights in tonnes). - Princess

Princess has lost 321 beads and Prince George are all trying to find. On the first day he found all but 83 beads. On the second day he found 68 beads. On the third day he found the rest, but the princess had lost 76. How many beads had Princess after the f - Foot in bus

It was 102 people on the bus. 28 girls had two dogs. A 11 girls had one dog. At the next stop seceded 5 dogs (even with their owners). They got two boys together with three dogs. The bus drove one driver. How many foot were in bus? - Father and son

Father is 44 years old, his son 16 years. Determine how many years ago was the father five times older than the son. - Perimeter from area

What is the perimeter of the square if its content is 64 cm^{2}? - The tap

For one day flows 148 l of water out of the tap. How much water will flow out for 3/4 day? - Charles Bridge

Charles Bridge was 15 times older than Frantův bridge from 1900 in 1931. How old is the Charles Bridge? - Roses and tulips

At the florist are 50 tulips and 5 times less roses. How many flowers are in flower shop? - Perpetrator

The perpetrator is a number that is smaller than the number 80. It is a multiple of five and it is odd. If we added up the tens and ones of this number we get number 8. - Nightingale

Nightingale sang five seconds for 5 hours and 5 minutes. How many seconds were missing to sing 10 hours? - Straight lines

Draw two lines c, d so that c || d. On line c mark points A, B, from point A start perpendicular to line c, from point B perpendicular to line c. - Car parking

The car park has 45 motorcycles and 25 cars. 14 cars went away and 2 arrived, then departs 12 motorcycles and 2 arrive. How many motorbikes and cars there are now? - Football team

Football team has in store black, purple and orange shirts, blue and white shorts and striped and gray socks. How many different outfits players may start?

Do you have an interesting mathematical example that you can't solve it? Enter it, and we can try to solve it.