Remember: Zero is where we start. Below zero is negative. Above zero is positive.
Positive, negative and zero
1
It is 4 degrees below zero. What number tells that?
2
Count the steps from zero. What number is the dot at?
3
Read the number line. What number is the dot at?
4
A diver is 15 meters below sea level. Which number tells that?
−15150
5
A kite is 15 meters above sea level. What does zero mean here?
No height at allSea level, the starting heightThe lowest place there is
6
On a thermometer, 0 degrees means there is no temperature at all.
TrueFalse
7
Join each to its number.
1a diver 12 meters below sea level
2a kite 12 meters above sea level
3owing 6 dollars
4having 6 dollars
A12
B−6
C6
D−12
8
Two dots are on the number line. Which pair of numbers are they at?
−4 and 3−3 and 43 and −4
9
Number the places from the lowest (1) to the highest (4).
a boat at sea level
a fish 20 meters below sea level
a kite 12 meters above sea level
a diver 5 meters below sea level
10
What number is the dot at? Each step is 5.
11
Mia owes 90 dollars. What does zero mean here?
No money and no debtOwing a littleThe least money you can have
12
The number −7 is below zero.
TrueFalse
13
The dot is a diver. She swims up to sea level, which is 0. How many meters does she swim up?
14
Tell about a place where you see numbers below zero. Say what zero means there.
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