3/10*9/10

To multiply the fractions \( \frac{3}{10} \) and \( \frac{9}{10} \), you multiply the numerators together and the denominators together:

\[ \frac{3}{10} \times \frac{9}{10} = \frac{3 \times 9}{10 \times 10} = \frac{27}{100} \]

So, \( \frac{3}{10} \times \frac{9}{10} = \frac{27}{100} \).

3/7*9/10

To multiply the fractions \(\frac{3}{7}\) and \(\frac{9}{10}\), you multiply the numerators together and the denominators together:

\[ \frac{3}{7} \times \frac{9}{10} = \frac{3 \times 9}{7 \times 10} = \frac{27}{70} \]

So, \(\frac{3}{7} \times \frac{9}{10} = \frac{27}{70}\).

2/3* 1 1/4

To multiply the fraction \(\frac{2}{3}\) by the mixed number \(1 \frac{1}{4}\), you first need to convert the mixed number into an improper fraction.

The mixed number \(1 \frac{1}{4}\) can be converted as follows:

\[ 1 \frac{1}{4} = 1 + \frac{1}{4} = \frac{4}{4} + \frac{1}{4} = \frac{5}{4} \]

Now, you can multiply \(\frac{2}{3}\) by \(\frac{5}{4}\):

\[ \frac{2}{3} \times \frac{5}{4} = \frac{2 \times 5}{3 \times 4} = \frac{10}{12} \]

Next, you can simplify \(\frac{10}{12}\) by dividing both the numerator and denominator by their greatest common divisor, which is 2:

\[ \frac{10 \div 2}{12 \div 2} = \frac{5}{6} \]

So, \(\frac{2}{3} \times 1 \frac{1}{4} = \frac{5}{6}\).

9.2*0.2

To multiply \(9.2\) by \(0.2\):

\[ 9.2 \times 0.2 = 1.84 \]

So, \(9.2 \times 0.2 = 1.84\).

9.6*0.2

To multiply \(9.6\) by \(0.2\):

\[ 9.6 \times 0.2 = 1.92 \]

So, \(9.6 \times 0.2 = 1.92\).

2.6* -1.3

To multiply \(2.6\) by \(-1.3\):

\[ 2.6 \times -1.3 = -3.38 \]

So, \(2.6 \times -1.3 = -3.38\).