Part of a measuring tape is shown. What is the value represented by X?

Four operations on decimals and fractions中文
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Worked solution

3

1. Determine the value of one small subdivision on the measuring tape

The difference between two major markings is 5.6−5.5=0.1 cm5.6 - 5.5 = 0.1\text{ cm}.
There are 1010 equal subdivisions between them.
Value of one subdivision = 0.1÷10=0.01 cm0.1 \div 10 = 0.01\text{ cm}.

2. Calculate the value represented by X

X is at the 4th tick mark after 5.5 cm5.5\text{ cm}.
Value of X = 5.5+4×0.01=5.5+0.04=5.54 cm5.5 + 4 \times 0.01 = 5.5 + 0.04 = 5.54\text{ cm}.

Answer

5.54 cm5.54\text{ cm} (option 4)

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