Whole Number Shifts
Which way do the digits shift in a product, when multiplied by 10 OR by a multiple of 10?
To the left.
Which way do the digits shift in a product when the factors have decimals?
To the right.
Round 38 to the nearest ten.
40
What is a factor?
A number that is being multiplied to give a product.
What is the commutative property?
A multiplication problem gives the same product, forwards or backwards.
2 x 10 = 20
10 x 2 = 20
What indicates how many places to the left the digits in a product shift?
What indicates how many places the digits in the product shift when multiplying by decimal factors?
The amount of digits to the RIGHT of the decimal (in the original factors).
Why is rounding and estimating a good skill in math?
What is a product?
The result of two factors being multiplied together.
What is the associative property of multiplication?
You can multiply the factors in any order you like.
2 x 5 x 10 = 10 x 2 x 5
Shift this product!
8 x 103 =
8000
(Three shifts to the left)
Shift this product!
352 x .1
35.2
(One shift to the right)
DAILY DOUBLE!!!
6.08 x 102 = 68
Is this answer correct? If not, what is wrong?
The original answer is incorrect.
6.08 x 102 = 608
You must also shift zeros.
What is an exponent?
The amount of times a number is multiplied by itself.
What do parenthesis mean in any type of math problem?
Solve what is inside the parenthesis first.
Shift this product!
4.83 x 1000 =
4,830
(Three shifts to the left)
Shift this product!
3.98 x .001
.00398
(Three shifts to the right)
Round this number to the nearest hundredth:
.365
.370
10,000
(10 x 10 x 10 x 10)
Solve this expression:
23 x 45
1,035
5.57 x 103 =
5,570
(Three shifts to the left)
Shift this product!
5,834 x .01
58.34
(Two shifts to the right)
Round this number to the nearest tenth:
.15023
.2
OR
.20000000
What is one thousandth times ten to the power of three?
One!
(.001 x 103 = 1.0)
(.001 x 10 x 10 x 10 = 1.0)
64 x 77
4,928