Question

Fill in the blanks:
To solve $6+8$ using the make a ten strategy, we break down $6$ into __(i)__ and __(ii)__. Next, we __(iii)__ $8$ and __(iv)__ to make $10.$ Then, we ___(v)___ $10$ and ___(vi)___ to find the answer.

• A. (i) 2, (ii) 5, (iii) add, (iv) 2, (v) add, (vi) 5
• B. (i) 4, (ii) 2, (iii) add, (iv) 2, (v) add, (vi) 4
• C. (i) 2, (ii) 6, (iii) add, (iv) 6, (v) add, (vi) 2
• D. (i) 1, (ii) 7, (iii) add, (iv) 7, (v) add, (vi) 1

Answer 1

The correct option is B (i) 4, (ii) 2, (iii) add, (iv) 2, (v) add, (vi) 4

Say: Let’s read the question.

Ask:
$\bullet$ What numbers can we break down $6$ into to add 6 and $8$ using the make a ten strategy, and why?
Ans: We need to break down $6$ into $4$ and $2$ because $2,$ when added to the other addend $8,$ makes $10.$
$\bullet$ What do we do next?
Ans: We add $10$ with $4$ and the other decomposed number to find the answer.
$\bullet$ What is the answer?
Ans: $14$
$\bullet$ What will be the complete sentence?
Ans: The complete sentence will be:
To solve $6+8$ using the make a ten strategy, we break down $6$ into $4$ and $2$. Next, we add $8$ and $2$ to make 10. Then, we add $10$ and $4$ to find the answer.
Hence, option A is the correct answer.

WB: If required, use the whiteboard to show the solution.


Probing Question:
Q. If we break down $8$ into $4$ and $4$ to add with $6,$ can we still call it a make a ten strategy to add?
A: Yes, because after splitting $8$ into $4$ and $4$, we add one of the $4$ with $6$ to make $10$. Then further add $10$ and the remaining $4$ to get the same answer, i.e., $14.$