Math

Question Complete the multiplication pattern with fractions to find the missing values.
12×15=110\frac{1}{2} \times \frac{1}{5} = \frac{1}{10} 13×15=115\frac{1}{3} \times \frac{1}{5} = \frac{1}{15} 14×15=120\frac{1}{4} \times \frac{1}{5} = \frac{1}{20} 15×15=125\frac{1}{5} \times \frac{1}{5} = \frac{1}{25}
Describe the relationship between the factors and products.

Studdy Solution

STEP 1

Assumptions
1. The pattern involves multiplying a fraction by 15\frac{1}{5}.
2. The products are fractions in their simplest form.
3. We are to continue the pattern by filling in the missing values in the chart.

STEP 2

Observe the pattern in the multiplication of the fractions.
The first row shows that 1×15=151 \times \frac{1}{5} = \frac{1}{5}.

STEP 3

Calculate the product for the second row.
12×15=12×15=1×12×5=110\frac{1}{2} \times \frac{1}{5} = \frac{1}{2} \times \frac{1}{5} = \frac{1 \times 1}{2 \times 5} = \frac{1}{10}

STEP 4

Calculate the product for the third row.
13×15=13×15=1×13×5=115\frac{1}{3} \times \frac{1}{5} = \frac{1}{3} \times \frac{1}{5} = \frac{1 \times 1}{3 \times 5} = \frac{1}{15}

STEP 5

Identify the pattern in the denominators of the products.
The denominators are multiples of 5: 5,10,15,5, 10, 15, \ldots

STEP 6

Use the pattern to fill in the missing numerator in the fourth row.
Given that ×15=120\square \times \frac{1}{5} = \frac{1}{20}, we need to find the numerator that, when multiplied by 15\frac{1}{5}, gives 120\frac{1}{20}.

STEP 7

Solve for the missing numerator in the fourth row.
×15=120\square \times \frac{1}{5} = \frac{1}{20}
=120÷15\square = \frac{1}{20} \div \frac{1}{5}
=120×51\square = \frac{1}{20} \times \frac{5}{1}
=520\square = \frac{5}{20}
=14\square = \frac{1}{4}

STEP 8

Use the pattern to fill in the missing numerator in the fifth row.
Given that ×15=125\square \times \frac{1}{5} = \frac{1}{25}, we need to find the numerator that, when multiplied by 15\frac{1}{5}, gives 125\frac{1}{25}.

STEP 9

Solve for the missing numerator in the fifth row.
×15=125\square \times \frac{1}{5} = \frac{1}{25}
=125÷15\square = \frac{1}{25} \div \frac{1}{5}
=125×51\square = \frac{1}{25} \times \frac{5}{1}
=525\square = \frac{5}{25}
=15\square = \frac{1}{5}

STEP 10

Complete the pattern in the chart with the found values.
1×15=1512×15=11013×15=11514×15=12015×15=125 \begin{array}{l} 1 \times \frac{1}{5}=\frac{1}{5} \\ \frac{1}{2} \times \frac{1}{5}=\frac{1}{10} \\ \frac{1}{3} \times \frac{1}{5}=\frac{1}{15} \\ \frac{1}{4} \times \frac{1}{5}=\frac{1}{20} \\ \frac{1}{5} \times \frac{1}{5}=\frac{1}{25} \end{array}

STEP 11

Describe the pattern observed.
The factors on the left side of the multiplication are consecutive fractions with a numerator of 1 and increasing denominators starting from 1. The products are fractions with denominators that are multiples of 5, increasing by 5 each time.

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