15:(2×5)=
\( 15:(2\times5)= \)
\( 21:(30:10)= \)
\( 100-(5+55)= \)
\( 70:(14\times5)= \)
\( 300:(5\times6)= \)
We will use the formula:
Therefore, we get:
Let's write the exercise as a fraction:
We'll convert it to a multiplication of two fractions:
We multiply numerator by numerator and denominator by denominator, and we get:
We will use the formula:
Therefore, we will get:
Let's write the division exercise as a fraction:
Now let's multiply by 10:
We'll reduce the 10 and get:
40
1
10
\( 21-(6-13)= \)
\( 99:(33:10)= \)
\( 2-(1+1)= \)
\( 19-(5+11)= \)
\( 26-(11-2)= \)
28
30
0
3
17
\( 66:(360:60)= \)
\( 87-(7+0)= \)
\( 18:(6\times3)= \)
\( 10:(10:5)= \)
\( 500:(2000:25)= \)
11
80
1
\( 300-(80-120)= \)
\( 721-(300-76)= \)
\( 112:(0.5:0.25)^2= \)
\( 400-(105+80)= \)
\( 210:(5.25\times4)= \)
340
497
28
215
10