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Maths · Grade 6 · Set A
Numbers Below Zero
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A
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Goal: 15 min
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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.
  1. 1a diver 12 meters below sea level
  2. 2a kite 12 meters above sea level
  3. 3owing 6 dollars
  4. 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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Answer key · Set A
Numbers Below Zero
1-4 Below zero is negative, so 4 degrees below zero is −4.
2-5 Start at zero and count left: 1, 2, 3, 4, 5. Left of zero is negative.
33 Start at zero and count right 3 steps. Right of zero is positive.
4−15 Below sea level is negative, so it is −15.
5Sea level, the starting height Zero is where we start counting. Here it is sea level.
6False Zero is where water freezes. Temperatures can go below it, like −4.
71-D, 2-A, 3-B, 4-C Below zero and owing are negative. Above zero and having are positive.
8−3 and 4 The left dot is 3 steps left of zero: −3. The right dot is 4 steps right of zero: 4.
93, 1, 4, 2 Below sea level is lower than sea level, and the farther below, the lower.
10-15 Count back from zero in fives: −5, −10, −15.
11No money and no debt Zero is the starting point: nothing owed and nothing saved.
12True A negative number is below zero.
1312 She is 12 meters below zero, so it takes 12 meters up to reach zero.
14Your own words: a grown-up reads it.
Mark each answer, count the right ones and write the score on the sheet.