Question

circle the larger part. count on with your fingers or the number path.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
10 + 3 =
3 + 10 =
2 + 10 =
10 + 2 =
= 4 + 8
= 8 + 4
9 + 6 =
6 + 9 =

Explanation:

Step1: Calculate \(10 + 3\)

To find the sum of \(10\) and \(3\), we add them together. \(10+3 = 13\)

Step2: Calculate \(3 + 10\)

Using the commutative property of addition (which states that \(a + b=b + a\)), we know that \(3+10\) should be the same as \(10 + 3\). So \(3 + 10=13\)

Step3: Calculate \(2+10\)

Adding \(2\) and \(10\), we get \(2 + 10=12\)

Step4: Calculate \(10+2\)

By the commutative property of addition, \(10 + 2\) is equal to \(2+10\). So \(10+2 = 12\)

Step5: Calculate \(4 + 8\)

Adding \(4\) and \(8\), we have \(4+8=12\)

Step6: Calculate \(8 + 4\)

Using the commutative property of addition, \(8 + 4\) is the same as \(4+8\). So \(8 + 4=12\)

Step7: Calculate \(9+6\)

Adding \(9\) and \(6\), we get \(9 + 6=15\)

Step8: Calculate \(6+9\)

By the commutative property of addition, \(6 + 9\) is equal to \(9+6\). So \(6+9 = 15\)

Answer:

\(10 + 3=\boldsymbol{13}\), \(3 + 10=\boldsymbol{13}\)

\(2+10=\boldsymbol{12}\), \(10 + 2=\boldsymbol{12}\)

\(\boldsymbol{12}=4 + 8\), \(\boldsymbol{12}=8 + 4\)

\(9+6=\boldsymbol{15}\), \(6 + 9=\boldsymbol{15}\)