Exponents And Powers Worksheets - Class 8, National Council Of Educational Research And Training Page 24

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M A T H E M A T I C S
154. Shrinking Machine
In a shrinking machine, a piece of stick is compressed to reduce its
length. If 9 cm long sandwich is put into the shrinking machine
below, how many cm long will it be when it emerges?
155. What happens when 1 cm worms are sent through these hook-ups?
(i)
(ii)
156. Sanchay put a 1cm stick of gum through a (1 × 3
–2
) machine. How
long was the stick when it came out?
157. Ajay had a 1cm piece of gum. He put it through repeater machine
1
given below and it came out
cm long. What is the missing
100,000
value?
158. Find a single machine that will do the same job as the given hook-up.
3
–2
(a) a (× 2
) machine followed by (× 2
) machine.
2
⎛ ⎞
1
× ⎜
⎜ ⎟
(b) a (× 2
4
) machine followed by
machine.
⎝ ⎠
2
(c) a (× 5
99
) machine followed by a (5
–100
) machine.
268
268
268
268
268
E E E E E
P P P P P
XEMPLAR
XEMPLAR
XEMPLAR
XEMPLAR
XEMPLAR
ROBLEMS
ROBLEMS
ROBLEMS
ROBLEMS
ROBLEMS

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