Across
- 5. Additive ________ property This is a fancy way of saying that adding the number zero to any quantity does not change the value of the quantity (it retains its identity after adding zero).
- 6. So, we see that each _______ number is also an integer.
- 7. As you progress in math, the use of the multiplication sign, is almost universally phased out and either the dot,is used or __________ are used to indicate it.
- 9. In the last lesson we saw how to think about adding signed numbers using ________ sum pairs, also known as additive inverses.
- 11. Recall that the ____________ value of a signed number is how far it lies from the origin. It also indicates the “size” of a number.
- 12. It should make sense that each of these sums is equal to zero. These pairs of numbers are called additive ___________. Negative numbers often represent having less than zero of something.
Down
- 1. Numbers that include fractions or decimals that terminate or repeat are known as __________ numbers because they are, by definition, the ratio of two integers.
- 2. And each _________ is also a rational number. Rational numbers can be plotted just as integers can, although their exact location may be harder to place.
- 3. Many times, in the real-world, we need to know the straight line _________ that separates two points in space. In this lesson we will see how this distance relates to subtraction and absolute value.
- 4. Recall that exponents represent ________ multiplication.
- 8. when we divide an integer by another integer (as long as we don’t divide by zero) we have a rational number. Whether that rational number is positive or negative depends on if the two integers have the same _____ (the fraction is positive) or different signs (the fraction is negative).
- 10. Likewise, the traditional division sign,is almost never used and instead the fraction _____, /, is used.