Question

$18$ photos are printed out of which $9$ photos are of animals and the rest are of birds. How many photos are of birdsWrite the subtraction equation for the problem.

• A. Photos of birds: $8;18–9=8$
• B. Photos of birds: $10;18–8=10$
• C. Photos of birds: $9;18–9=9$
• D. Photos of birds: $8;18–8=9$

Answer 1

The correct option is C Photos of birds: $9;18–9=9$

Say: Let us find the number of photos of birds, and frame the subtraction equation.

Ask:
$\bullet$ How many photos are printed?
Ans: $18$
$\bullet$ How many photos of animals are there?
Ans: $9$
$\bullet$ How do we find the difference?
Ans: By subtracting the number of photos of animals, i.e., $9$ from the total number of photos printed, i.e., $18.$
$\bullet$ What equation will be framed?
Ans: $18–9=9$
$\bullet$ So, how many photos of birds are there?
Ans: $9$

Hence, Option C is correct.

WB: If required, use the whiteboard to represent the bigger and smaller number as shown and write the subtraction equation.


Probing Question:
Q. Using the same three numbers, i.e., $9,9$ and $18,$ what addition equation can be framed?
A. $9+9=18$