The unit are the ones normally used and compatible with each other. Just multiply the 3 numbers given .
10x100x220 = 220 000 W x hour = 220 kW x hour.
Qx6=51 , write 1 and carry 5 .
We know the first product (multiplication with ones' of the second factor) is 991.
The second product is the result of multiplication by 1 but
in reality it is a 13 that means Q6 should only be shifted.
Be careful about carry as you add .
13x13x13 + 8x13x13 + 2x13 + 1 = ? .
Play cards are used except for 10, joker is 0, J corresponds to 10 of base 10 etc. Have a look at ry1 .
4 basic operations are all binary operations.
It is possible to write terms like axbxc, a+b+c, ... etc. but they are evaluated via consecutive evaluations of each binary operation.
The part unseen must be 9 times the part seen .
25 is the first common element.
The households real consumption is 200 kW x hour and it should have paid $20 .
Q6 in base 13 is 11x13+6 = 149 in base 10.
The correct number that should be just below the multiplication line is given in ry1. Have please a look at ry1 .
To convert km^{3} to m^{3} we need to multiply it by 1 000 000 000.
Just multiplication by 10. The question aims to teach the physical properties of ice-sea water.
12.5 x 36 000 000 000 000 = 50 x 9 000 000 000 000 = ?
Just drop 3 "0"s from the given number to make m. out of mm.
Under these assumptions sea level increases by 1 mm. in about 20 years .
The correct calculation gives 6561 .
If a m^{2} gets 1 kg. , 1000 m^{2} gets a ton.
1 million grains should weigh 35 kg.
10 to 1 would give 180 kg.
Have please a look at ry1 .
14. and 15. Fibonacci numbers are respectively 233 and 377 . Any Fibonacci number is the sum of the two just before it gives the 20.
4181x377 = ?
20x20x30x30 = 400x900 = ?
48 x (2x2x2)x (5x5x5) x (10x10x10x10) = ?
48 x (2x2x2)x (5x5x5) x (10x10x10x10) = 48 x (10x10x10) x (10x10x10x10) = 48 x 10 000 000 = ?
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