Question

write the fact families for each set of numbers.
62, 15, 77
35, 15, 50

Explanation:

For the set 62, 15, 77:

Step 1: Addition fact 1

To find the first addition fact, we add the two smaller numbers. So, \( 62 + 15 \)
\( 62 + 15 = 77 \)

Step 2: Addition fact 2

We can also add the two numbers in reverse order. So, \( 15 + 62 \)
\( 15 + 62 = 77 \)

Step 3: Subtraction fact 1

We use the sum and one of the addends to find the other addend. So, \( 77 - 62 \)
\( 77 - 62 = 15 \)

Step 4: Subtraction fact 2

Similarly, using the sum and the other addend. So, \( 77 - 15 \)
\( 77 - 15 = 62 \)

For the set 35, 15, 50:

Step 1: Addition fact 1

Add the two smaller numbers. So, \( 35 + 15 \)
\( 35 + 15 = 50 \)

Step 2: Addition fact 2

Add the two numbers in reverse order. So, \( 15 + 35 \)
\( 15 + 35 = 50 \)

Step 3: Subtraction fact 1

Use the sum and one addend to find the other. So, \( 50 - 35 \)
\( 50 - 35 = 15 \)

Step 4: Subtraction fact 2

Use the sum and the other addend. So, \( 50 - 15 \)
\( 50 - 15 = 35 \)

Answer:

For 62, 15, 77:
\( 62 + 15 = 77 \)
\( 15 + 62 = 77 \)
\( 77 - 62 = 15 \)
\( 77 - 15 = 62 \)

For 35, 15, 50:
\( 35 + 15 = 50 \)
\( 15 + 35 = 50 \)
\( 50 - 35 = 15 \)
\( 50 - 15 = 35 \)