6.12: Proficiency Exam

Exercise \(\PageIndex{1}\)

The decimal digit that appears three places to the right of the decimal point is in the position.

Answer

thousandth

Exercise \(\PageIndex{2}\)

Write, using words, 15.036.

Answer

fifteen and thirty-six thousandths

Exercise \(\PageIndex{3}\)

Write eighty-one and twelve hundredths using digits. 81.12

Answer

81.12

Exercise \(\PageIndex{4}\)

Write three thousand seventeen millionths using digits.

Answer

0.003017

Exercise \(\PageIndex{5}\)

Convert 0.78 to a fraction. Reduce.

Answer

\(\dfrac{39}{50}\)

Exercise \(\PageIndex{6}\)

Convert 0.875 to a fraction. Reduce.

Answer

\(\dfrac{7}{8}\)

Exercise \(\PageIndex{7}\)

Round 4.8063 to the nearest tenth.

Answer

4.8

Exercise \(\PageIndex{8}\)

Round 187.51 to the nearest hundred.

Answer

200

Exercise \(\PageIndex{9}\)

Round 0.0652 to the nearest hundredth.

Answer

0.07

Exercise \(\PageIndex{10}\)

\(15.026 + 5.971\)

Answer

20.997

Exercise \(\PageIndex{11}\)

\(72.15 - 26.585\)

Answer

45.565

Exercise \(\PageIndex{12}\)

\(16.2 \cdot 4.8\)

Answer

77.76

Exercise \(\PageIndex{13}\)

\(10,000 \cdot 0.016\)

Answer

16

Exercise \(\PageIndex{14}\)

\(44.64 \div 18.6\)

Answer

2.4

Exercise \(\PageIndex{15}\)

\(0.21387 \div 0.19\)

Answer

1.1256

Exercise \(\PageIndex{16}\)

\(0.\overline{27} - \dfrac{3}{11}\)

Answer

0

Exercise \(\PageIndex{17}\)

Convert \(6 \dfrac{2}{11}\) to a decimal.

Answer

\(6.\overline{18}\)

Exercise \(\PageIndex{18}\)

Convert \(0.5 \dfrac{9}{16}\) to a decimal.

Answer

0.055625

Exercise \(\PageIndex{19}\)

\(3 \dfrac{1}{8} + 2.325\)

Answer

5.45

Exercise \(\PageIndex{20}\)

\(\dfrac{3}{8} \times 0.5625\)

Answer

\(\dfrac{27}{128}\) or 0.2109375