Question

Use the ‘make a $10$’ strategy and select the correct option to fill the empty boxes.

• A. $10,7$
• B. $10,2$
• C. $10,3$
• D. $10,5$

Answer 1

The correct option is C $10,3$

Say: Let's read the question and observe the image.

Ask:
$\bullet$ What do we have to do here?
Ans: We have to subtract $5$ from $12$ using “make a ten”.
$\bullet$ What are the steps to subtract using the make a ten strategy?
Ans: We need to identify the number that needs to be subtracted from the bigger number to make it into a ten. Here, $2$ needs to be subtracted from $12$ to make it into a ten.
(ii) We break down the smaller number into that number. Here, $5$ is broken down into $2$ and $3$. Then, $2$ is subtracted from $12$ to make a $10,$ and $3$ is the remaining.
(iii) Finally, $3$ is subtracted from $10,$ i.e., $10–3,$ to get the difference of $7.$
$\bullet$ So, what numbers are used to fill the empty boxes?
Ans: $10$ and $3$

Hence, Option B is correct.

WB: Use the whiteboard to write the equation and find the total using the make a ten strategy as shown and explain the steps.