Time to shake and roll! Grab some dice and join us for game time. In this lesson, we learn addition properties using dice. Jenny rolls two dice and adds the numbers together, but she isn't sure which number to start with! Here's a hint: it doesn't matter, the answer will be the same. Try adding 3 plus 5 and then, 5 plus three. What do you notice? We can also make it easier to add three addends by making a ten, or finding a double. Your turn to roll the dice!
Learn addition properties such as the commutative property and associative property
Understand that if 3 plus 4 equals 7, then 4 plus 3 also equals 7
Learn that the numbers added together to give a sum are called addends
Learn that grouping addends to make a ten can help solve addition sentences (ex. 1 + 9 + 3 --> 10 + 3 = 13)
Learn that grouping addends to make doubles facts can help solve addition sentences ( 2 + 3 + 5 --> 5 + 5 = 10)
Apply properties of operations as strategies to add and subtract. Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)