Examples with solutions for Multiplication and Division of Signed Mumbers: Division of positive numbers

Exercise #1

+914:+247 +9\frac{1}{4}:+\frac{24}{7}

Video Solution

Step-by-Step Solution

Let's convert 9 and a quarter to a simple fraction:

914=9+14=9×44+14=364+14=36+14=374 9\frac{1}{4}=9+\frac{1}{4}=\frac{9\times4}{4}+\frac{1}{4}=\frac{36}{4}+\frac{1}{4}=\frac{36+1}{4}=\frac{37}{4}

Now the exercise we got is:

374:247= \frac{37}{4}:\frac{24}{7}=

Let's convert the division exercise to a multiplication exercise, and don't forget to switch the numerator and denominator in the second fraction:

374×724= \frac{37}{4}\times\frac{7}{24}=

Let's combine it into one multiplication exercise:

37×724×4=25996 \frac{37\times7}{24\times4}=\frac{259}{96}

Answer

25996 \frac{259}{96}

Exercise #2

+4.8:+3= +\text{4}.8:+3=

Video Solution

Step-by-Step Solution

Let's convert 4.8 to a simple fraction:

4.8=4810 4.8=\frac{48}{10}

Let's convert 3 to a simple fraction:

3=31 3=\frac{3}{1}

Now the exercise we got is:

4810:31= \frac{48}{10}:\frac{3}{1}=

Let's convert the division exercise to a multiplication exercise, and don't forget to swap the numerator and denominator in the second fraction:

4810×13= \frac{48}{10}\times\frac{1}{3}=

Let's combine into one multiplication exercise:

48×110×3=4810×3= \frac{48\times1}{10\times3}=\frac{48}{10\times3}=

Let's break down 48 into a multiplication exercise:

16×310×3= \frac{16\times3}{10\times3}=

Let's reduce the 3 in both numerator and denominator and we get:

1610 \frac{16}{10}

Let's convert the simple fraction to a decimal:

1610=1.6 \frac{16}{10}=1.6

Answer

1.6 1.6

Exercise #3

+0.4:+3= +\text{0}.4:+3=

Video Solution

Step-by-Step Solution

Let's convert 0.4 to a simple fraction:

0.4=410 0.4=\frac{4}{10}

Let's convert 3 to a simple fraction:

3=31 3=\frac{3}{1}

Now the exercise we received is:

410:31= \frac{4}{10}:\frac{3}{1}=

Let's convert the division exercise to a multiplication exercise, and don't forget to switch the numerator and denominator in the second fraction:

410×13= \frac{4}{10}\times\frac{1}{3}=

Let's combine into one multiplication exercise:

4×110×3=430 \frac{4\times1}{10\times3}=\frac{4}{30}

Let's break down the numerator and denominator into multiplication exercises:

2×215×2= \frac{2\times2}{15\times2}=

Let's reduce the 2 in the numerator and denominator and we get:

215 \frac{2}{15}

Answer

215 \frac{2}{15}

Exercise #4

+5:+30= +5:+30= ?

Video Solution

Step-by-Step Solution

First let's write the exercise in the form of a simple fraction:

530 \frac{5}{30}

Next, we'll break down the 30 into a multiplication operation:

55×6= \frac{5}{5\times6}=

Finally, cancel out the 5 in both the numerator and denominator of the fraction, leaving us with:

16 \frac{1}{6}

Answer

16 \frac{1}{6}

Exercise #5

+217:+14= +2\frac{1}{7}:+\frac{1}{4}=

Video Solution

Step-by-Step Solution

Let's convert 2 and seven-sevenths to a simple fraction:

217=2+17=2×77+17=2×77+17=147+17=14+17=157 2\frac{1}{7}=2+\frac{1}{7}=2\times\frac{7}{7}+\frac{1}{7}=\frac{2\times7}{7}+\frac{1}{7}=\frac{14}{7}+\frac{1}{7}=\frac{14+1}{7}=\frac{15}{7}

Now the exercise we received is:

157:14= \frac{15}{7}:\frac{1}{4}=

Let's convert the division exercise to a multiplication exercise, and don't forget to switch the numerator and denominator in the second fraction:

157×41= \frac{15}{7}\times\frac{4}{1}=

Let's combine into one multiplication exercise:

15×47×1=607 \frac{15\times4}{7\times1}=\frac{60}{7}

Let's factor 60 into an addition exercise:

56+47= \frac{56+4}{7}=

Let's separate the exercise into addition between fractions:

567+47= \frac{56}{7}+\frac{4}{7}=

Let's solve the first fraction exercise and we get:

8+47=847 8+\frac{4}{7}=8\frac{4}{7}

Answer

847 8\frac{4}{7}

Exercise #6

+12:+4= +\frac{1}{2}:+4=

Video Solution

Step-by-Step Solution

Let's convert 4 to a simple fraction:

4=41 4=\frac{4}{1}

Now the exercise we received is:

12:41= \frac{1}{2}:\frac{4}{1}=

Let's convert the division exercise to a multiplication exercise, and don't forget to switch the numerator and denominator in the second fraction:

12×14= \frac{1}{2}\times\frac{1}{4}=

We'll combine it into one multiplication exercise and solve:

1×12×4=18 \frac{1\times1}{2\times4}=\frac{1}{8}

Answer

18 \frac{1}{8}

Exercise #7

+24:+8= ? +24:+8=\text{ ?}

Video Solution

Step-by-Step Solution

First, let's write the exercise in the form of a simple fraction:

248= \frac{24}{8}=

Next we'll factor 24 into a multiplication exercise:

3×88= \frac{3\times8}{8}=

Finally we cancel out the 8 in both the numerator and denominator of the fraction to get:

31=3 \frac{3}{1}=3

Answer

3 3

Exercise #8

(+9):(+9)= (+9):(+9)=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result will necessarily be a positive number:

+:+=+ +:+=+

Therefore:

+9:+9=+1 +9:+9=+1

Answer

1 1

Exercise #9

(+12):(+6)= (+12):(+6)=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result will necessarily be a positive number:

+:+=+ +:+=+

Therefore:

+12:+6=+2 +12:+6=+2

Answer

2 2

Exercise #10

(+32):(+8)= (+32):(+8)=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result will necessarily be a positive number:

+:+=+ +:+=+

Therefore:

+32:+8=+4 +32:+8=+4

Answer

4 4

Exercise #11

(+28):(+7)= (+28):(+7)=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result will necessarily be a positive number:

+:+=+ +:+=+

Therefore:

+28:+7=+4 +28:+7=+4

Answer

4 4

Exercise #12

(+1):(+0.25)= (+1):(+0.25)=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result will necessarily be a positive number:

+:+=+ +:+=+

First, let's convert the numbers to fractions:

1=11 1=\frac{1}{1}

0.25=25100 0.25=\frac{25}{100}

Now we have the following problem:

11:25100= \frac{1}{1}:\frac{25}{100}=

Let's convert the division to multiplication, and don't forget to switch the numerator and denominator:

11×10025= \frac{1}{1}\times\frac{100}{25}=

Let's combine everything into one problem:

1×1001×25= \frac{1\times100}{1\times25}=

Let's solve the multiplication in the numerator and denominator and we get:

10025=4 \frac{100}{25}=4

Answer

4 4

Exercise #13

(+689):(+612)= (+6\frac{8}{9}):(+6\frac{1}{2})=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result must be a positive number:

+:+=+ +:+=+

First, let's convert each mixed number to an improper fraction as follows:

689=6×9+89=54+89=629 6\frac{8}{9}=\frac{6\times9+8}{9}=\frac{54+8}{9}=\frac{62}{9}

612=6×2+12=12+12=132 6\frac{1}{2}=\frac{6\times2+1}{2}=\frac{12+1}{2}=\frac{13}{2}

Now we have the problem:

629:132= \frac{62}{9}:\frac{13}{2}=

Let's convert the division to multiplication, and don't forget to swap the numerator and denominator:

629×213= \frac{62}{9}\times\frac{2}{13}=

Let's combine everything into one problem:

62×29×13= \frac{62\times2}{9\times13}=

Let's solve the multiplication in the numerator, and factor the denominator into an addition problem as follows:

1249×10+9×3= \frac{124}{9\times10+9\times3}=

Let's solve the multiplication problems in the denominator:

12490+27= \frac{124}{90+27}=

Let's combine the denominator and we get:

124117 \frac{124}{117}

Answer

124117 \frac{124}{117}

Exercise #14

(+12):(+912)= (+\frac{1}{2}):(+9\frac{1}{2})=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result will necessarily be a positive number:

+:+=+ +:+=+

First, let's convert the mixed fraction to an improper fraction as follows:

912=9×2+12=18+12=192 9\frac{1}{2}=\frac{9\times2+1}{2}=\frac{18+1}{2}=\frac{19}{2}

Now we have the problem:

12:192= \frac{1}{2}:\frac{19}{2}=

Let's convert the division to multiplication, and don't forget to switch the numerator and denominator:

12×219= \frac{1}{2}\times\frac{2}{19}=

We'll simplify the 2 and get:

119 \frac{1}{19}

Answer

119 \frac{1}{19}

Exercise #15

(+0.15):(+0.05)= (+0.15):(+0.05)=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result will necessarily be a positive number:

+:+=+ +:+=+

First, we will convert each mixed fraction to an improper fraction as follows:

0.15=15100 0.15=\frac{15}{100}

0.05=5100 0.05=\frac{5}{100}

Now we have the problem:

15100:5100= \frac{15}{100}:\frac{5}{100}=

We will convert the division to multiplication, and don't forget to switch the numerator and denominator:

15100×1005= \frac{15}{100}\times\frac{100}{5}=

We will simplify the 100 and get:

155=3 \frac{15}{5}=3

Answer

3 3

Exercise #16

(+45715):(+9)= (+45\frac{7}{15}):(+9)=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result must be a positive number:

+:+=+ +:+=+

First, let's convert each mixed fraction to an improper fraction as follows:

9=91 9=\frac{9}{1}

45715=45×15+715= 45\frac{7}{15}=\frac{45\times15+7}{15}=

Let's solve the multiplication in the numerator:

45×15675 45\\\times15\\675

Now we got:

675+715=68215 \frac{675+7}{15}=\frac{682}{15}

Now our division problem between the fractions looks like this:

68215:91= \frac{682}{15}:\frac{9}{1}=

Let's convert the division to multiplication, and don't forget to switch between numerator and denominator:

68215×19= \frac{682}{15}\times\frac{1}{9}=

Let's combine everything into one problem:

682×115×9= \frac{682\times1}{15\times9}=

Let's solve the problem in the numerator:

15×9135 15\\\times9\\135

And the result is:

682135 \frac{682}{135}

Answer

682135 \frac{682}{135}

Exercise #17

(±3313):(±11213)= (\pm3\frac{3}{13}):(\pm1\frac{12}{13})=

Video Solution

Step-by-Step Solution

Since we are dividing two positive numbers, the result will necessarily be a positive number:

+:+=+ +:+=+

First, we'll convert each mixed fraction to an improper fraction as follows:

3313=3×13+313=39+313=4213 3\frac{3}{13}=\frac{3\times13+3}{13}=\frac{39+3}{13}=\frac{42}{13}

11213=1×13+1213=13+1213=2513 1\frac{12}{13}=\frac{1\times13+12}{13}=\frac{13+12}{13}=\frac{25}{13}

Now we have:

4213:2513 \frac{42}{13}:\frac{25}{13}

We'll convert the division problem to multiplication, and don't forget to switch the numerator and denominator:

4213×1325= \frac{42}{13}\times\frac{13}{25}=

We'll simplify the 13 and get:

4225= \frac{42}{25}=

We'll factor 42 into an addition problem:

25+1725=2525+1725= \frac{25+17}{25}=\frac{25}{25}+\frac{17}{25}=

We'll solve accordingly and get:

1+1725=11725 1+\frac{17}{25}=1\frac{17}{25}

Answer

11725 1\frac{17}{25}