1. Ratios
Reduce the numbers: 50 in a 1:2 ratio 111 at a ratio of 2:3 70 at 10:50 560 at a ratio of 3:8
2. Thunder and lightning
There was a glimpse of the sky and we hear a thunder in 4.5 seconds. The light spreads at 300,000 kilometers per second, so we can assume the flash instantly without delay. However, the speed of the sound is much smaller in the air one third of a kilomete
3. Eq1
Solve equation: 4(a-3)=3(2a-5)
4. If-then equation
If 5x - 17 = -x + 7, then x =
5. Family 8
Father is 38 years old, daughter 12, son 14. How many years will father have as many years as his children together?
6. Lcd3
What is LCD of the equation of ? ? And what is x?
7. Photo enlarge
Mark wants to enlarge a 4-inch by 6-inch photo so that it has a height of 15inches. Use a ratio table to determine the new width of the photo.
8. Clubhouse
There were only chairs and table in the clubhouse. Each chair had four legs, and the table was triple. Scouts came to the clubhouse. Everyone sat on their chair, two chairs were left unoccupied, and the number of legs in the room was 101. How many chairs w
9. Two cuboids
Find the volume of cuboidal box whose one edge is: a) 1.4m and b) 2.1dm
10. Pie
Vili ate three pieces of pie . If it piece is 1/8 how much pie did he eat?
11. Milk bill
Mrs Tara buys 2 liters of milk daily. If 1 liter of milk cost \$0.27. What will be her milk bill for 30 days.
12. Soda
A pack of 12 sodas cost 5.04. What is the unit rate in dollars per soda?
13. Bathroom 2
A bathroom is 2.4 meters long and 1.8 meters wide. How many square tiles 1 dm on each side are to be used to cover it?
14. Rainfall
How many liters of water did fell in a 32m long and 8m wide garden, if 8mm of rain fell?
15. Pie II
Vili ate three pieces of pie. If it pieces is 1/8 how much pie did he eat?
16. Suzan
Susan's age will be after 12 years four times as much as twelve years ago. How old is Susan now?
17. Simplify
Simplify the following problem and express as a decimal: 5.68-[5-(2.69+5.65-3.89) /0.5]
18. Cubes into cuboid
How many 12 centimeter cubes fit into the block (cuboid) with 6dm, 8,4dm and 4,8?
19. Trapezoid ABCD
ABDC is a trapezoid in which AB and CD are parallel sides measuring 6 and 9 respectively. Angles ABC and BCD are both right angles. Find the length of segment BD.
20. Hours
The lesson lasts 45 minutes. For the week, students have 18 lesson hours. How many are the actual hours?

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