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Defuse the Bomb - Adding and Subtracting Fractions

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Defuse the Bomb – Adding and Subtracting Fractions 1
The Mathematician, a notorious terrorist has planted a bomb. You must defuse
that bomb using the mathematical clues he’s left.
Answer the questions, then cut the coloured wires in the order that the answers
appear, using the table below:
Red
Blue Green Yellow Purple Brown Grey Turquoise Black Orange
4
7
11
1
17
1
1
5
3
3
1
1
5
2
2
7
8
12
12
30
6
15
12
5
10
Here are the clues that show which order to cut the wires – you may have to
simplify your answers, so look carefully:
3
1
4
8
1
Calculate +
2
Calculate
3
Calculate +
4
Calculate +
5
Calculate 1 +
6
Calculate 3 + 1
7
Calculate 2
8
Calculate 2 − 1
7
10
−
2
5
1
7
3
12
3
1
4
3
3
2
4
3
1
11
4
12
7
15
−
2
5
2
1
3
10
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