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Signed Number Mystery Vault

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Signed Number Mystery Vault

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Subtracting Integers Quest

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Hidden Author
Hidden Author
Lebanon

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Signed Number Mystery Vault
 

Signed Number Mystery VaultOnline version

Subtracting Integers Quest

by Hidden Author
1

Riddle 1: A zero appears after a double minus—where do we land on the number line?

Hints

Move to the left or right from the start?

Remember minus a minus adds.

Think about subtracting two equal numbers.

2

Riddle 2: Take away two from seven; what remains on the line after a step left?

Hints

The result is the distance between the numbers.

You move left on the number line.

Subtract a positive number.

3

Riddle 3: Subtract a smaller negative from a larger negative: -3 minus (-5).

Hints

Count the steps to the right.

Compare the values: bigger negative minus a bigger negative becomes a positive shift.

Subtracting a negative means moving right.

4

Riddle 4: A positive number minus a negative—7

Hints

The total movement is to the right.

You start at 6 and move right past the origin.

Subtracting a negative is like adding.

5

Riddle 5: -8 minus 3; what is the result on the line?

Hints

End point is on the left side.

Starting at -8, go 3 more units left.

Subtract a positive number; move left.

6

Riddle 6: -7 minus 2; determine the position after moving left.

Hints

End up at a more negative position.

From -7, move two steps further left.

Subtracting a positive moves left.

7

Riddle 7: 2 minus negative 6—how far right should we go?

Hints

End up to the right of zero.

Picture adding 6 to 2: a total of +8.

Subtracting a negative adds distance to the right.

8

Riddle 8: Find the missing integer: +3 + □ = -5

Hints

Solve by balancing on the number line.

The unknown must be a negative shift.

Add the unknown to +3 to reach -5.

9

Riddle 9: Find the missing integer: +3 - □ = -5

Hints

The missing number is a positive jump.

You move right to reach -5 from +3.

Subtracting a negative is like adding.

10

Riddle 10: Find the missing integer: -4 + □ = +2

Hints

Think of moving right from -4.

The unknown must be a positive number.

You need to gain 6 to reach +2 from -4.

 
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