Rounding
What is 42.78 rounded to the nearest whole number?
43
4 tenths + 12 hundredths [___] 0.23
a) <
b) >
c) =
b) >
.52 > .23
Write 103 in standard form.
100
Sally measured the height of her sisters. Her first sister is 26.4 inches, her second sister is 26.04 inches, and her third sister is 26.044 inches.
Which is true about the heights of Sally's sisters?
a) 26.044 > 26.04 > 26.4
b) 26.04> 26.044 > 26.4
c) 26.4> 26.044 > 26.04
d) 26.4 > 26.04 > 26.044
c) 26.4> 26.044 > 26.04
What is 248.708 in expanded form?
a) 2+ 4+ 8+ 7+ 0+ 8
b) (2 x 100) + (4x 10) + (8 x 1) + (7 x .1) + (8 x .001)
c) (248 x 100) + (708 x .001)
d) 2 x 4 x 8 x 7 x 0 x 8
b) (2 x 100) + (4x 10) + (8 x 1) + (7 x .1) + (8 x .001)
What is 11.49 rounded to the nearest whole number?
11
seventy- two tenths [______] 7.2
a) <
b) >
c) =
c) =
7.2 = 7.2
What option has the same value as 4.5x 104?
a) 4.5x 4.5x 4.5x 4.5x 10x 10x 10x 10
b) 4.5x 4.5x 4.5x 4.5x 10
c) 4.5x 10x 4
d) 4.5x 10x 10x 10x 10
d) 4.5x 10x 10x 10x 10
Simon was multiplying 28.43 by 100. He wrote 28.4300 as his answer. He said, "This problem is so easy because all I have to do is add two zeros!" Is Simon correct in his thinking? Explain how you know.
No, he is incorrect because....
28.43 x 100= 2,843
we are moving the decimal by the number of zeros. Not adding the zeros on the number!
Select the number that contains a 3 that is ten times the value of the underlined 3 in 68.35.
a) 453.89
b) 71.35
c) 221.13
d) 35.24
a) 453.89
What is 8.344 rounded to the nearest tenth?
8.3
5 hundreds [_______] 501 hundredths
a) <
b) >
c) =
b) >
500 > .501
Which option has the same value as 5.1÷102 ?
a) 5.1 ÷ 10 ÷ 10
b) 5.1 ÷ 10 ÷ 2
c) 5.1 ÷ 5.1 ÷ 10 ÷ 10
d) 5.1 ÷ 5.1 ÷ 10
a) 5.1 ÷ 10 ÷ 10
Sarah mixed 14.31 grams of cheerios, 45.1 grams of reeses puffs, and 5.7 grams of lucky charms to make a mix of cereal. How many grams of cereal did she make?
Sarah mixed 65.11 grams of cereal.
Select the number that contains a 6 that is 1/10 of the value of the underlined 6 in 23.465.
a) 46.213
b) 423.645
c) 52.856
d) 323.465
c) 52.856
What is 33.055 rounded to the nearest hundredth?
33.06
11 tenths + 10 tenths + 32 hundredths [_____] 2.42
a) <
b) >
c) =
c) =
2.42 = 2.42
What is 78.094 in word form?
seventy-eight and ninety four thousandths
Using a method of your choice, prove why the answers to the problems below are the same.
5.23 x 103= 5,230 523,000 ÷ 102= 5,230
Answers may very.
Moving the decimal to the right when multiplying and moving the decimal to the left when dividing.
What digit could be placed in the blank in order to make the statement below true?
8.6__8 > 8.660
6, 7, 8, 9
8.668> 8.660
8.678 > 8.660
8.688> 8.660
8.698> 8.660
Minnie was asked to round a number to the nearest tenth. She correctly wrote 462.7 as her answer. What number could Minnie have been asked to round?
a) 462.78
b) 462.72
c) 462.609
d) 462.75
b) 462.72
What number makes this inequality true?
6,864.537> __________
a) 6,864.534
b) 6,864.545
c) 6,864.539
d) 6,864.528
d) 6,864.528
6,864.537> 6,864.528
Which of the following are equal to 83.041?
a) eighty- three and forty-one tenths
b) (8 x 10) + (3 X 1) + (4 X (1/10)) + (1 x (1/1,000))
c) (8 x 10) + (3 x 1) + (4 x (1/100)) + (1 x (1/1,000))
d) eighty- three and forty- one thousandths
c) (8 x 10) + (3 x 1) + (4 x (1/100)) + (1 x (1/1,000))
d) eighty- three and forty- one thousandths
Logan is saving up for a new bongo. Every week he planned to make about $5 taking out the neighbor's trash for tips. He decided to use a rounding strategy to see if he met his goal this week.
$0.56+$1.17 +$0.60 + $3.18
0.00 +. 1.00 + 0.00 + 2.00 = 3
Do you agree with the way Logan rounded?
No! Answers may very!
YES WE ARE!!!!