Examples with solutions for The Commutative property: Addition only

Exercise #1

7+4+3+6=? 7+4+3+6=\text{?}

Video Solution

Step-by-Step Solution

To make solving the exercise easier, we try to add numbers that give us a result of 10.

Let's keep in mind that:

7+3=10 7+3=10

6+4=10 6+4=10

Hence we obtain a more manageable exercise to solve:

10+10=20 10+10=20

Answer

20

Exercise #2

19+34+21+10+6=? 19+34+21+10+6=\text{?}

Video Solution

Step-by-Step Solution

In order to simplify our calculations, we try to add numbers that give us a round result.

Keep in mind that:

19+21=40 19+21=40

34+6=40 34+6=40

Now, we get a more manageable exercise to solve:

40+40+10=80+10=90 40+40+10=80+10=90

Answer

90

Exercise #3

74+32+6+4+4=? 74+32+6+4+4=\text{?}

Video Solution

Step-by-Step Solution

In order to simplify the resolution process we try to add numbers that give us a round result.

Keep in mind that:

4+4=8 4+4=8

Now we get the exercise:

74+36+6+8= 74+36+6+8=

Keep in mind that:

74+6=80 74+6=80

32+8=40 32+8=40

Now, we get a more manageable exercise to solve:

80+40=120 80+40=120

Answer

120

Exercise #4

113+59+71+57=? 113+59+71+57=\text{?}

Video Solution

Step-by-Step Solution

In order to simplify our calculations we try to add numbers that give us a round result.

Let's keep in mind that:

113+57=170 113+57=170

59+71=130 59+71=130

Now we have a more manageable exercise to solve:

170+130=300 170+130=300

Answer

300