# Grade - examples - page 159

1. Book
Louise read from their favorite book for three days 18 pages. Every day read the same number of pages. How many pages she read every day?
2. Tricolors
From the colors - red, blue, green, black and white, create all possible tricolors.
3. Stairway
Stairway has 20 steps. Each step has a length of 22 cm and a height of 15 cm. Calculate the length of the handrail of staircases if on the top and bottom exceeds 10 cm.
4. Efficiency
What is the power output of kettle 2 kW with efficiency 90%?
5. Cube 1-2-3
Calculate the volume and surface area of the cube ABCDEFGH if: a) /AB/ = 4 cm b) perimeter of wall ABCD is 22 cm c) the sum of the lengths of all edges of the cube is 30 cm.
6. Working together on project
Two employees working on the project. First make it alone for 20 days the second for 24 days. How many days will take to complete project if 5 days they work together then first will take two days holiday and after returning they completes a project toget
7. Price increase
A 20 percent price increase meant a 90-crown raise. How many cost a product after?
8. AS - sequence
What are the first ten members of the sequence if a11=22, d=2.
9. Cylindrical tank
Cylindrical tank holds 600hl water and is deep 2.5 m. Calculate the diameter of the cylinder.
10. A mast
A mast 32 meters high was broken by the wind so that its top touches the ground 16 meters from the pole. The still standing part of the mast, the broken part and the ground form a rectangular triangle. At what height was the mast broken?
11. Volume increase
How many percent will increase in the pool 50 m, width 15m if the level rises from 1m to 150cm?
12. Goat, cabbage and wolf
A man once had to travel with a wolf, a goat and a cabbage. He had to take good care of them, since the wolf would like to taste a.piece of goat if he would get the chance, while the goat appeared to long for a tasty cabbage. After some traveling, he sudde
13. Rhombus MATH
Construct a rhombus M A T H with diagonal MT=4cm, angle MAT=120°
14. Plane II
A plane flew 50 km on a bearing 63degrees20 and the flew on a bearing 153degrees20 for 140km. Find the distance between the starting point and the ending point
15. Quadratic function 2
Which of the points belong function f:y= 2x2- 3x + 1 : A(-2, 15) B (3,10) C (1,4)
16. Boys and girls
There are 48 children in the sports club, boys are 10 more than girls. How many girls go to the club?
17. Adam and Ben
When Ben is so many years old to Adam today, Adam will be 23 years old. When Adam was as old as Ben, Ben was two years old. How old is today Ben and Adam?
18. LCD 2
The least common denominator of 2/5, 1/2, and 3/4
19. Digit sum
Determine for how many integers greater than 900 and less than 1,001 has digit sum digit of the digit sum number 1.
20. Rectangle
Calculate area of the rectangle if its length is 12 cm longer than its width and length is equal to the square of its width.

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