PLACE VALUE
What is 1,000 less than 72,450?
71,450
23,456 + 12,300 =
35,756
Round 4,209 to the nearest hundred.
4,200
Maria has 2,450 stickers. She gives 500 to her friend. How many does she have left?
1,950 stickers left
Which property is shown? 5 + 8 = 8 + 5
Commutative Property
What is 100 more than 345,621?
345,721
45,000 + ___ = 78,250
33,250
Round 67,845 to the nearest thousand.
68,000
A library has 1,235 fiction books and 2,675 nonfiction books. How many books are there altogether?
3,910 books
Which property is shown?
(3 + 6) + 4 = 3 + (6 + 4)
Associative Property
What number is 100 more than 498,765?
498,865
126,435 + 52,678 = ?
179,113
Round each number to the nearest thousand and add:
124,567 + 35,432
160,000
A toy costs $18,750. Carlos has $12,500. How much more money does he need?
$6,250 more money
True or False:
The Commutative Property works for subtraction.
False
What number is 1,000 less than 100,000?
99,000
A store sold 45,678 pencils in January and 56,789 in February. How many pencils did it sell altogether?
102,467 pencils
A school has 108,765 students in one district and 165,432 in another. Estimate the total by rounding to the nearest ten thousand.
280,000
A bakery made 25,600 cookies. It sold 12,450 in the morning and 8,675 in the afternoon. How many cookies were left?
4,475 cookies left
Give an example showing that subtraction is not commutative.
✅ Example:
9 − 4 ≠ 4 − 9
I am thinking of a number. 1,000 less than my number is 56,789. What is my number?
57,789
A school collected 125,675 cans during one campaign and 87,459 during another. How many cans did they collect altogether?
213,134 cans
287,654 + 143,789
432,000
A school has 35,000 notebooks. It gives 12,450 to Grade 4 and 9,875 to Grade 5. How many notebooks are left?
12,675 notebook are left.
Explain in your own words what the Associative Property of Addition does.
✅ Answer: It allows us to change the grouping of numbers when adding without changing the answer.