Additional Arithmetic Rules: Exercises with 2 terms

$15:(2\times5)=$

We will use the formula:

$a:(b\times c)=a:b:c$

Therefore, we get:

$15:2:5=$

Let's write the exercise as a fraction:

$\frac{\frac{15}{2}}{5}=$

We'll convert it to a multiplication of two fractions:

$\frac{15}{2}\times\frac{1}{5}=$

We multiply numerator by numerator and denominator by denominator, and we get:

$\frac{15}{10}=1\frac{5}{10}=1\frac{1}{2}$

$1\frac{1}{2}$

$21:(30:10)=$

We will use the formula:

$a:(b:c)=a:b\times c$

Therefore, we will get:

$21:30\times10=$

Let's write the division exercise as a fraction:

$\frac{21}{30}=\frac{7}{10}$

Now let's multiply by 10:

$\frac{7}{10}\times\frac{10}{1}=$

We'll reduce the 10 and get:

$\frac{7}{1}=7$

$7$

$100-(5+55)=$

40

$70:(14\times5)=$

1

$300:(5\times6)=$

10

$21-(6-13)=$

28

$99:(33:10)=$

30

$2-(1+1)=$

0

$19-(5+11)=$

3

$26-(11-2)=$

17

$66:(360:60)=$

11

$87-(7+0)=$

80

$18:(6\times3)=$

1

$10:(10:5)=$

$5$

$500:(2000:25)=$

$6\frac{1}{4}$

$300-(80-120)=$

340

$721-(300-76)=$

497

$112:(0.5:0.25)^2=$

28

$400-(105+80)=$

215

$210:(5.25\times4)=$

10