The correct descending order is: 10, 3, 1, 0, - 10 and - 20.

The correct ascending order is: - 5, - 3, 0, 1, 3 and 5.

Let one integer be z. Let the other integer be y. z – y = 12 z + y = 14 By using eleminating method, we get z = 13 and y = 1

• 150, - 160, - 170, - 180 lie between - 140 and - 200.

Sum of first 5 prime numbers = 2 + 3 + 5 + 7 + 11 = 28

We can compare negative and positive numbers in all possible ways on a number line.

If we look for the sum of - 7 and 0, that will be - 7 + 0 = - 7.

• 7 is equal to one integer out of the two and no other pair of integers gives the same sum as one of the integers.

Arranging in descending order means to write numbers in an order starting from the largest to the smallest. So, the descending order for the given integers is: 24, 12, 8, 0, - 24 and - 45.

8 and 0 Sum of 8 and 0 = 8 + 0 = 8 Product of 8 and 0 = 8 x 0 = 0

9 x 1/9 = 1

The integers between - 12 and 7 are - 11, - 10, - 9, - 8, - 7, - 6, - 5, - 4, - 3, - 2, - 1, 0, 1, 2, 3, 4, 5 and 6. So, the number of integers between - 12 and 7 is 18.

Arranging in ascending order means to write numbers in an order starting from the smallest to the largest. So, ascending order for the given integers is: - 12, - 9, - 7, 0, 5 and 8.

On a number line, - 2 is 8 steps behind 6 and 14 is 8 steps ahead of 6. That means both integers are at the same distance from 6 on the number line.

• 2 + - 1 + 0 x 4 + - 7  = - 2 + (- 1) + (0 x 4) + (- 7) = - 2 - 1 + 0 - 7 = - 10

Additive inverse of - 10 = 10 Six less than 10 is 4.