Question

Find the total using the “make a \(10\)” strategy.
\(7 + 7 =\) __

Answer 1

Say: Let's read the question.

Ask:
\(\bullet\) What do we have to do here?
Ans: We have to add \(7\) and \(7\) using “make a ten”.
\(\bullet\) What are the steps to add using the make a ten strategy?
Ans: We need to identify the number that needs to be added to the bigger addend to make it into a ten. Here, both the numbers are equal, so \(3\) needs to be added to any one of the \(7\) to make it into a ten.
(ii) We break down the other \(7\) into \(3\) and \(4\). Then, 7 and \(3\) are added to make a \(10,\) and \(4\) is remaining.
(iii) Finally, \(10\) and \(4,\) i.e., \(10 + 4,\) are added to get the total of \(14.\)
\(\bullet\) So, what is the completed equation?
Ans: \(7 + 7 = 14\)

Hence, Option C 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.

Probing Question:
If we have to add \(6\) and \(7,\) instead of \(7\) and \(7\), can we use double plus\(1\) strategy to find the total? How?
A: To add \(6\) and \(7\), we can use the doubles \(6 + 6 = 12\) and then add \(1\) to \(12\) to find the answer, i.e., \(13.\) So, \(6 + 7 = 6 + 6 + 1 = 13.\)