# Is O is the smallest positive integer

## Understand math 3, textbook

Which two whole numbers are represented by markings on the number line? Compare the two numbers! Give reasons for the answer! Solution: The numbers ‒8 and ‒7 are shown on the number line. It can be seen that ‒8 <‒7, since the number ‒8 is on the number line to the left of the number ‒7. While with natural numbers every number has a successor, but not every number has a predecessor (the smallest natural number 0 has no predecessor among the natural numbers), this is different with whole numbers: Every whole number has both a predecessor and a successor . There is no smallest or largest integer. In Exercise 1.20 the number ‒8 is the predecessor of the number ‒7 or the number ‒7 is the successor of the number ‒8. Enter the predecessor and the successor of the number ‒15! Solution: The predecessor of the number ‒15 is ‒16, the successor of the number ‒15 is ‒14. Exercises Basics Which two whole numbers are indicated by markings on the number line? Compare the two numbers! Give reasons for the answer! a) 3 2 4 5 6 1 0 ‒1 ‒2 ‒6 ‒3 ‒4 ‒5 b) 1 0 c) 6 4 8 10 14 2 0 ‒2 12 ‒4 ‒14 ‒12 ‒6 ‒8 ‒10 d ) 50 10 0 ‒50 Enter the predecessor and the successor of the number! a) ‒5 c) ‒1 e) ‒99 b) ‒19 d) 0 f) ‒300 Write down all integers between a) ‒7 and 4, b) ‒11 and ‒2, c) ‒8 and 8 lie! How many numbers are there in each case? Tick ​​all that apply! The predecessor of 0 is a negative number. The predecessor of 0 is a positive number. The successor of every negative number is negative. The successor of every positive number is positive. A 1.20 I 0 ‒1 1 2 3 ‒2 ‒3 ‒4 ‒5 ‒9 ‒6 ‒7 ‒8 1.21 D 1.22 IA 1.23 D Ó 1.24 D 1.25 I Ó exercise - gi73my 26 I1 Numbers and measurements For testing purposes only - property of the publisher öbv