610 = ?100

As the denominators are multiples of 10, multiply both the numerator and denominator of the fraction 610 by 10.

⇒ 610 × 1010 = 60100

Now, solve 610 + 6100.

= 60100 + 6100

= 66100

Therefore, '60100' is the equivalent fraction of 610 and '66100' is the sum of 610 + 6100.

Length of ribbon Steve has = 310 inches
Length of ribbon Mark has = 87100 inches

Adding the lengths of both the ribbons
310 + 87100

Since denominators are different and as they are multiples of 10, we use 310 = 30100
Therefore 30100 + 87100 = 117100

Miles walked by Evelyn yesterday = 310
Miles walked by Evelyn today = 310

Total miles walked by Evelyn in 2 days = 310 + 31100

We observe that the denominators of the fractions are not equal, but are multiples of 10.
So we multiply 310 with 10, both numerator and denominator so as to make the denominators same/ alike

Numerator 3 × 10 = 30 and Denominator 10 × 10 = 100

Thus 310 = 30100

Now adding by substituting equivalent fractional relationship 310 = 30100
3100 + 31100 = 30100 + 31100 = 61100

Gallons of paint already with Dennis = 910
Gallons of paint bought by Dennis = 85100

Adding 910 + 85100,
We observe that the denominators of the fractions are not equal, but are multiples of 10.
So we multiply 910with 10, both numerator and denominator so as to make the denominators same/alike.

Thus, an equivalent fraction of 910 is 90100

Adding 85100 and 910, 910 + 85100 = 90100 + 85100

we get 90100 + 85100 = 175100

The number of blue pens out of ten pens = 810

The number of blue pens out of hundred pens = 78100

Adding 810 + 78100,
We observe that the denominators of the fractions are not equal, but are multiples of 10. So we multiply 810 with 10, both numerator and denominator so as to make the denominators same/alike.

Thus, an equivalent fraction of 810 is 80100 .

Adding 78100 and 810,
810 + 78100 =80100 + 78100

We get 80100 + 78100 = 158100

We see that the denominators are not same and that the denominators are multiples of 10.

Take the highest denominator i.e. 100, and consider the lowest denominator 10

So, an equivalent fraction of 6910 is 690100

Adding 6910 and 33100, 6910 + 33100 = 690100 + 33100

we get, 690100 + 33100 = 723100

Adding the option 1110 + 1810 = 2910

Adding the option 1910 + 1110 = 3010

Adding the option 1910 + 810 = 2710

Adding the option 1110 + 9100 = 110100 + 9100

we get 110100 + 9100 = 119100

The given fractions are 210 and 11100.

Here the denominators are 10 and 100. These denominators are different.

Before adding and subtracting fractions, the fractions should have equal denominators.

Take the LCD of the denominators 10 and 100. The LCD is 100.

: Now multiply both the numerators and denominators of the fractions 210 by 10 and 11100 by 1 to make the common denominator.

210 = 210 × 1010 = 2 × 1010 × 10 = 20100. Here 210 is equivalent to the fraction 20100.

11100 = 11100 × 11 = 11 × 1100 × 1 = 11100.

Now adding the two fractions 20100 and 11100
20100 + 11100.

Here denominators are common. So add the numerators directly.

20 + 11100 = 31100.

The given fractions are 910 and 90100.

Here the denominators are 10 and 100. These denominators are different.

Before adding and subtracting fractions, the fractions should have equal denominators.

Take the LCD of the denominators 10 and 100. The LCD is 100.

Now multiply both the numerators and denominators of the fractions 910 by 10 and 90100 by 1 to make the common denominator.

910 = 910 × 1010 = 9 × 1010 × 10 = 90100. Here 910 is equivalent to the fraction 90100.

90100 = 90100 × 11 = 90 × 1100 × 1 = 90100.

Now adding the two fractions 90100 and 90100
90100 + 90100.

Here denominators are common. So add the numerators directly.

90 + 90100 = 180100.

Given that 810 = ?100. Here we must find the unknown numerator to get the equivalent fraction for 810.

As the denominators are multiples of 10, multiply both numerator and denominator of the fraction 810 by 10 to get the equivalent fraction for 810.

810 = 810 × 1010 = 8 × 1010 × 10 = 80100.

: Here the equivalent fraction for 810 is 80100. So, the unknown numerator is 80.

Now we need to add the fractions 810 and 8100
810 + 8100 = 80100 + 8100

Here, the denominators are common. So add the numerators directly.

80 + 8100 = 88100.

Given that 3310 = ?100. Here we must find the unknown numerator to get the equivalent fraction for 3310.

As the denominators are multiples of 10, multiply both numerator and denominator of the fraction 3310 by 10 to get the equivalent fraction for 3310.

3310 = 3310 × 1010 = 33 × 1010 × 10 = 330100.

Here the equivalent fraction for 3310 is 330100. So, the unknown numerator is 330.

Now we need to add the fractions 3310 and 69100
3310 + 69100 = 330100 + 69100

Here, the denominators are common. So add the numerators directly.

330 + 69100 = 399100.

Given that 9910 = ?100. Here we must find the unknown numerator to get the equivalent fraction for 9910.

As the denominators are multiples of 10, multiply both numerator and denominator of the fraction 9910 by 10 to get the equivalent fraction for 9910.

9910 = 9910 × 1010 = 99 × 1010 × 10 = 990100.

Here the equivalent fraction for 9910 is 990100. So, the unknown numerator is 990.

Now we need to add the fractions 9910 and 10100
9910 + 10100 = 990100 + 10100

Here, the denominators are common. So add the numerators directly.

990 + 10100 = 1000100.