Explains the concept of zero in mathematics, emphasizing its role as a number that represents the empty set. It illustrates ...

Look at the number line and count the steps, following the arrow jumps: 0 to 5 → 5 to 10 → 10 to 15 → 15 to 20 → 20 to 25 →> 25 to 30 Can you see that there are 6 jumps of 5? So there ...

The arrow reaches the number 85. The number line goes from 0 to 1000. The easiest thing to do first is to figure out where the halfway point, 500, is. This will help estimating the value of the ...