How to subtract fractions

Practice Questions

PSAT Math › How to subtract fractions

Questions

7

1

Subtract and simplify the fractions:

$\small \frac{7}{5} - \frac{3}{6}$

2

Define an operation $\triangleright$ as follows:

For all real ,

$a \triangleright b = a^{2}- b^{3}$ .

Evaluate $\frac{4}{5} \triangleright \frac{4}{5}$ .

3

Define an operation $\bigstar$ as follows:

For all real ,

$a \bigstar b = \frac{1}{2} a - \frac{1}{3} b$ .

Evaluate $15 \bigstar 10$ .

4

Define an operation $\triangleright$ as follows:

For all real ,

$a \triangleright b = 7 - ab$ .

Evaluate $5 \triangleright \left ( - \frac{5}{3}\right )$ .

5

Define an operation $\Cup$ as follows:

For all real ,

$a \Cup b = a - b^{2}$

Evaluate $5\frac{1}{2} \Cup 1 \frac{1}{3}$ .

6

Define an operation $\bigstar$ as follows:

For all real ,

$a \bigstar b = 2a - 3b$ .

Evaluate $\frac{4}{5} \bigstar \frac{3}{10}$ .

7

Define an operation $\Cup$ as follows:

For all real ,

$a \Cup b = \frac{3}{5} a -b$

Evaluate $\frac{1}{3 }\Cup \frac{1}{10}$

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