# Examples for 7th grade (seventh)

#### Number of examples found: 1974

• Perpendicular prism Calculate the volume of the perpendicular prism if its height is 60.8 cm and the base is a rectangular triangle with 40.4 cm and 43 cm legs.
• Milk At the kindergarten, every child got 1/5 liter of milk in the morning and another 1/8 liter of milk in the afternoon. How many liters were consumed per day for 20 children?
• Simple equation 2 Find X in this simple equation: X/9 = 96/108
• 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
• Number What number I think? The third is 6 and half is 2 more than the its quarter.
• Cube 8 The surface of the cube is 0.54 m2. Calculate the length of the cube edge.
• Series Andrew wrote this series of numbers: 1,3,7,15, .... n. Which number in the series does not belong? ?
• Conference 148 is the total number of employees. The conference was attended by 22 employees. How much is it in percent?
• Clock What time is now, if the time elapsed after noon is 2/10 of time that elapses before midnight?
• Median In the right triangle are sides a=41 dm b=42 dm. Calculate the length of the medians tc to the hypotenuse.
• Carbon dioxide Calculate how many grams of oxygen are in 50 g of carbon dioxide CO2. Relative atomic mass of oxygen is 16 and of carbon is 12.
• Ducats The king divided the ducats to his three sons in a ratio of 2: 5: 4. How many ducats the king divided them if the youngest received 260 ducats, which was the least of all sons.
• Michal Michal has 2.90 per hour. How much does he earn during the week of the summer job?
• Divide money Divide 1200 USD at a ratio of 1:2:3:4:5:6:9:10
• Water lake The length of the lake water is 8 meters width 7 meters and depth 120 centimeters. How many liters of water can fit into the water lake?
• Tablecloth I embroider tablecloth in 20 days but if I embroider 3/4 hours a day I have embroider it for 15 days. How long do I embroider a day?
• The largest number Find the largest integer such that: 1. No figures is not repeat, 2. multiplication of every two digits is odd, 3. addition all digits is odd.
• Mother and daughter 2 The mother is 40 years older than her daughter. How old is the mother if her age is eight thirds age of daughter?
• Bases The length of the bases trapezium are in ratio 4:5. Length of midline is 15. How long are the bases of a trapezoid?
• Two gears The two gears fit together. The larger gear has 32 teeth, the smaller has 20 teeth less. How many times does turn a smaller gear if the bigger gear turns three times?

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