Arithmetic - examples
- Cost reduction
Two MP3 players whose price was equal to originally have been discounted the first by 20%, the second by 35%. After the price reduction was the difference in their prices 750, - CZK. What was the original price of each of the two players?
Divide the three line segment 13 cm, 26 cm and 19.5 cm long for parts so that the individual parts were equally long and longest. How long will the individual parts and how many it will?
3 pounds subtract 1/3 of a pound.
- Z7-I-4 stars 4949
Write instead of stars digits so the next write of product of the two numbers to be valid: ∗ ∗ ∗ · ∗ ∗ ∗ ∗ ∗ ∗ ∗ 4 9 4 9 ∗ ∗ ∗ ∗ ∗ ∗ 4 ∗ ∗
- Scale factor
A prism with a volume of 1458 mm3 is scaled down to a volume of 16mm3. What is the scale factor in fraction form?
Is the number 214743 divisible by 10?
Charlie bought 7 same chocolates for 14 Eur. How many euros he pay for 27 chocolates?
- One half
One half of ? is: ?
The parents had 2 daughters. Each of them had one brother. How many members family had?
One brick is 2 kg and half a brick heavy. What is the weight of one brick?
5 trees in 3 lines grows in the orchard. How many trees are in the orchard?
A cyclist passes 88 km in 4 hours. How many kilometers he pass in 8 hours?
I have 12 balls and my friend has 18. About how many has my friend more balls?
Compare fractions ?. Which fraction of the lower?
- Is right?
Is triangle with sides 24, 51 and 45 right triangle?
Compare with characters >, <, =: 63.79 ? 63.79
Calculate how many hours take holidays, if take 1 weeks.
- 7 heroes
5 heroes galloping on 5 horses behind. How many ways can sort them behind?
The root of the equation ? is: ?
- Reverse Pythagorean theorem
Given are lengths of the sides of the triangles. Decide which one is rectangular: Δ ABC: 73 m, 66 m, 51 m ? Δ DEF: 63 cm, 105 cm, 84 cm ? Δ GHI: 50 dm, 48 dm, 14 dm ? Δ JKL: 31 m, 45 m, 40 m ? Δ MNO: 28 m, 53 m, 45 m ?