Question

Benny has $7$ balloons, and Sandy has $5$ balloons. How many more balloons does Benny have than Sandy? Identify the addition equation with the same numbers as those in the subtraction equation given below.
$7–5=$ __

• A. $12;5+2=7$
• B. $12;7+5=12$
• C. $2;2–7=5$
• D. $2;5+2=7$

Answer 1

The correct option is D $2;5+2=7$

Say: Let's read the question.

Ask:
$\bullet$ What do we have to do here?
Ans: We have to find how many more balloons Benny has than Sandy.
$\bullet$ How do we find the difference between two numbers?
Ans: By subtracting the smaller number from the bigger number.
$\bullet$ What is the bigger number?
Ans: $7$
$\bullet$ What is the smaller number?
Ans: $5$
$\bullet$ What equation will be framed?
Ans: $7–5=2$
$\bullet$ So, how many more balloons does Benny have than Sandy?
Ans: $2$

Say: Now, let us identify the addition equation that is framed using the same numbers.

Ask:
$\bullet$ How do we find the total?
Ans: By adding the two smaller numbers to get a bigger number.
$\bullet$ Using the same three numbers $2,5$ and $7,$ what addition equations can be framed?
Ans: $2+5=7$ or $5+2=7$
$\bullet$ Which of these equations is used in the given options?
Ans: $5+2=7$
$\bullet$ Which of these options has both answers correct?
Ans: Option B.

Hence, Option B is correct.

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