Assess Yourself
How well do you understand the ideas in this lesson?
Goal:
Goal:
Show What You Know!
What did you learn from today's lesson? Let's check!
Which property tells you that adding 0 to a number gives you the same number?
- Identity property
- Commutative property
- Associative property
- Distributive property.
That’s right! This property tells you that adding 0 to a number gives you the same number.
Sorry, that is not right. This property tells you that you can switch the places of addends and still get the same sum
Sorry, that is not right. This property tells you that you can group the addends in any order and get the same sum.
Sorry, that is not correct. This property tells you that you can multiply by the sum of two addends by a number and get the same answer as when you multiply each addend individually.
Which property tells you that you can group addends using parentheses in different ways and still get the same answer?
- Identity Property
- Commutative Property
- Associative Property
- Distributive Property
Sorry, that is not correct. This property tells you that adding 0 to a number gives you the same number.
Sorry, that is not correct. This property tells you that you can switch the places of addends and still get the same sum.
Correct! This property tells you that you can group addends in any way and still get the same sum.
Sorry, that is not correct. This property tells you that you can multiply by the sum of two addends by a number and get the same answer as when you multiply each addend individually.
Which property could you use to solve the second equation below?
\({12 + 15 = 27}\)
\({15 + 12 = ?}\)
- Identity Property
- Commutative Property
- Associative Property
- Distributive Property
Sorry, that is not right. This property is for adding 0 to a number. The two equations have the same addends in switched places.
That is right! The two equations have the same addends in switched places.
Sorry, that is not right. This property tells you that you can group addends in any way and still get the same sum. The two equations have the same addends in switched places.
Sorry, that is not right. This property tells you that you can multiply by the sum of two addends by a number and get the same answer as when you multiply each addend individually. The two equations have the same addends in switched places.
Which property should you use to solve the equation below?
\({3 \times (4+2) = ?}\)
- Identity Property
- Commutative Property
- Associative Property
- Distributive Property
Sorry, that is not correct. This property is for adding 0 to a number. This equation shows addition within a set of parentheses and then a number outside to multiply by the sum.
Sorry, that is not correct. This property is for when two addends switch places, which will give the same sum. This equation shows addition within a set of parentheses and then a number outside to multiply by the sum.
Sorry, that is not correct. This property tells you that you can group addends in any way and still get the same sum. This equation shows addition within a set of parentheses and then a number outside to multiply by the sum.
Correct! This equation shows addition within a set of parentheses and then a number outside to multiply by the sum.
Which property should you use to solve the second equation below?
\({(27+16) + 38 = 81}\)
\({27+(16+38) = ?}\)
- Identity Property
- Commutative Property
- Associative Property
- Distributive Property
Sorry, that is not right. This property is for adding 0 to a number. The two equations add the same addends but grouped differently.
Sorry, that is not right. This property tells you that you can group addends in any way and still get the same sum. The two equations add the same addends grouped in a different way.
That is right! The two equations add the same addends grouped in a different way.
Sorry, that is not right. This property tells you that you can multiply by the sum of two addends by a number and get the same answer as when you multiply each addend individually. The two equations add the same addends grouped in different ways.
Choose one of the properties below to solve the equation. Find the correct answer.
| Identity | Commutative | Associative | Distributive |
\({65+0=?}\)
- 30
- 11
- 0
- 65
Sorry, that is not correct. You multiplied 6 times 5. You needed to add 65 plus 0.
Sorry, that is not correct. You added 6 plus 5 plus 0 instead of 65 plus 0.
Sorry, that is not correct. You multiplied instead of adding.
Correct! The identity property tells you that adding 0 to a number gives you the same number.
Choose one of the properties below to solve the equation. Find the correct answer.
| Identity | Commutative | Associative | Distributive |
\({41+39 = 80}\)
\({39+41 = ?}\)
- 39
- 80
- 81
- 41
Sorry, that is not right. This is the first addend. Add it to 41. You can also look at the sum of the first equation!
Correct! The commutative property tells you that the sum of the first equation is also the sum of the second equation.
Sorry, that is not right. You did not add 39 plus 41 correctly. Look at the sum of the first equation!
Sorry, that is not right. This is the second addend. You can also look at the sum of the first equation!
Choose one of the properties below to solve the equation. Find the correct answer.
| Identity | Commutative | Associative | Distributive |
\({7 \times (5 + 5) = ?}\)
- 70
- 17
- 80
- 40
Correct! The distributive property tells you that you can distribute the 7 through the parentheses to find an answer.
Sorry, that is not correct. You added 7 plus 5 plus 5. You need to distribute the 7 through the parentheses.
Sorry, that is not correct. You added 75 plus 5. The 7 is outside the parentheses. You need to distribute the 7 through the parentheses.
Sorry, that is not correct. You multiplied 7 times 5 and then added 5. The 7 is outside the parentheses. You need to distribute the 7 through the parentheses.
Read the word problem below. Use the properties of operations to find the product of the second equation.
Daniel has 6 plates. There are 8 snacks on each plate. How many snacks does Daniel have in all?
\({8 \times 6 = 48}\)
\({6 \times 8 = ?}\)
- 68
- 42
- 48
- 14
Sorry, that is not right. The 6 and 8 are separate factors. You need to multiply 6 times 8 or look at the product of the first equation!
Sorry, that is not right. You multiplied incorrectly. Look at the product of the first equation!
That is right! The commutative property tells you that the product of the first equation is also the product of the second equation.
Sorry, that is not right. You added instead of multiplying. The commutative property also works for multiplication. Look at the product of the first equation!
Read the word problem below. Use the properties of operations to find the product of the second equation.
Daniel has 2 plates with 5 “ants on a log” snacks on each plate. Each snack has 3 raisins. How many raisins are there in all?
\({(5 \times 2) \times 3 = 30}\)
\({5 \times (2 \times 3) = ?}\)
- 25
- 6
- 10
- 30
Sorry, that is not correct. You added the numbers within the parentheses and then multiplied the number outside the parentheses. You should not add any of the numbers. Look at the product of the first equation!
Sorry, that is not correct. You multiplied 2 times 3 without also multiplying that product by 5. Look at the product of the first equation!
Sorry, that is not correct. You added instead of multiplying. The associative property also works for multiplication. Look at the product of the first equation!
Correct! The associative property tells you that the product of the first equation is also the product of the second equation.
Summary
Questions answered correctly:
Questions answered incorrectly: