Powers of 10
Write an expression that is equivalent to 9,000 using at least THREE numbers
(90x10x10) (3 x 3 x 103)
(30x30x10) (30 x 3 x 102)
(3,000x3x1) (Something that equals 9,000 that Ms. Rodman approves:)
If I have 75 bags of potatoes and there are 105 potatoes in each bag, How many potatoes do I have in all?
7,875 Potatoes
What property of multiplication is this showing?
1,797 x 1 = 1,797
Choices: Commutative, Identity, Associative, or Zero
Identity Property: any number multiplied by one is itself
What is the best color to wear on a friday at Greenfield?
RED OF COURSE!
What number does this represent in standard form? 106
1,000,000
What is 168 x 34?
5,712
What property of multiplication is this showing?
897 x 0 = 0
Choices: Commutative, Identity, Associative, or Zero
How many times do you move numbers to the left in this equation?
3.45 x 107
Seven times, because you are multiplying the number by 10 seven times.
What is 75 x 105?
7,500,000
Does 17 make this sentence true?
134 x _____ = 2,376
No, 134 x 17 = 2,278
What property of multiplication is this showing?
2,345 x 56 = 56 x 2,345
Choices: Commutative, Identity, Associative, or Zero
Commutative Property: the order of numbers in a multiplication problem does not change the product
Is 3,198 a reasonable product for 727 x 44? Why or why not?
No, because even just estimating 700 x 40 would put the number at 28,000 so it would need to be greater than 28,000.
Four places to the right because it is multiplying by ten four times.
Does 25 make this sentence true?
66 x ____ = 1,650
Yes
What property of multiplication is this showing?
3 x (9 x 20) = (3 x 20) x 9
Choices: Commutative, Identity, Associative, or Zero
Associative Property: The product of three or more numbers remains the same regardless of how they are grouped
The Janis School District ordered 30 cases of dry-erase markers. Each case contains 48 boxes of dry-erase markers. How many boxes of dry-erase markers did the Janis School District order?
1,440 boxes
What is the answer to this equation:
5.06 x 104
50,600
What is 621 x 17?
10,557
What property of multiplication is this showing?
(32x45) x 60 = 32 x (45 x 60)
Choices: Commutative, Identity, Associative, or Zero
Associative Property: The product of three or more numbers remains the same regardless of how they are grouped
If I have 15 boxes of cookies and there are 32 cookies in each box. Would I have enough cookies for everyone in my class to have 10 cookies? (I have 45 students in my class) Please give a detailed explanation why.
Yes, because 15 x 32(480) is greater than 45 x 10(450)!