4 ms·
Why is the correct value 10x + y?
by chrismorgan 3y ago
Why is the correct value 10x + y?
- roenxi 3y agoSay the correct value is 42. He broke the number down into 10x4 + 2. It is just writing the correct number in a form that emphasises the important elements for the transposition.
- chrismorgan 3y agoOh, transposed two or more digits, got it.
- sally_glance 3y agoProbably because swapping two digits causes that (times ten moves the digit one place to the left). For example if you accidentally swapped 210,00 to 120,00: 20x10 + 10 is the correct number, 20 + 10x10 is the swapped one.
- pajko 3y ago2x100 + 1x10 + 0x0, 1x100 + 2x10 + 0x0