Powers of 10
Place Value
Comparing and Naming
Rounding
Vocab
100
Write ten to the third power using an exponent.
(Exponents are a vocab word. The small number above the ten. That tells you how many tens are multiplied together.)
Answer: 103
Fun fact! This is the same as 10 X 10 X 10. OR the number 1,000.
100
Draw a place value chart From the Hundreds place on the right, to the ThousandTHS place to the left.
You MUST label the place values.
100
Write 2 thousandths and 4 hundredths as a decimal.
(You may use a place value chart now. During quiz you could make one for your self to use on scratch paper.)
Answer: 0.042 , or .042
100
What number is ALWAYS the midpoint in the place value to the_____ of the place you're rounding to.
The midpoint is always 5 in the place value to the right.
100
What is STANDARD FORM?
The regular way we write numbers
200
Rewrite 104
As a number.
(The test would call this STANDARD FORM. It's the usual way we would write a number.)
Answer: 10,000
This is easy to see because it has 4 zeroes (the same as the exponent)
Fun fact! This is the answer to 10 X 10 X 10 X 10
(4 tens, each gives one Zero to the end of the number)
200
Write 32.1 on the place value chart.
200
Which is greater
14 tenths or 1.5 ?
1.5 is greater.
14 tenths would bundle up to 1 one and 4 tenths, or 1.4
*Show on place value chart.
200
Round .937 to the nearest hundredth.
.94
.937 had a 7 in the thousandths place. Our hundredths place neighbor tells us to round up. (It is above the midpoint of 5 thousandths.)
200
What is an EXPONENT?
That small number above a number. It tells you how many times to multiply a number by itself.
3 in 103
300
How many spaces would you shift digits (or move the decimal) if you multiply by 102 ?
DOUBLE POINTS! If you can explain why it would move that many spaces.
Answers: 2
The place value of each would shift 2 greater.
Double point answers (may vary) examples:
1.The exponent is two so I move two spaces.
2. 102 is 10 X 10. Each 10 I multiply by I move one space. So for two 10's I'd move 2 spaces.
3. 102 would have two Zeroes. I'd move two spaces
300
How many are in each place value in 1.23
(As a vocab word, we'd call this writing in EXPANDED FORM)
1 ones 2 tenTHS 3 hundredTHS
300
Write this EXPANDED FORM number as a decimal.
BONUS DOUBLE POINTS, If you can also write it as a word.
2 X10 + 4 X 1 + 4 X 1/10(or 0.1) + 6 X 1/100 (or 0.01)
(EXPANDED FORM is a vocab word to look for on the quiz ;) )
24.46
2 tens, 4 ones, 4 tenths, 6 hundredths
Bonus answer: twenty four and forty six hundredths
24 and 46 hundredths
300
Round .746 to the nearest TENTH
.7
The hundredths place has a 4. our tenths place neighbor tells us to round down. It is below the mid point of 5 hundredths.
300
What is EXPANDED FORM?
Bonus Double points. IF, you can also write
2.009 in expanded form.
Expanded form is when you write a number to show the place value of each digit.
In words:
2 ones 9 thousandths
as a number sentence:
2 X 1 + 9 X 1/1000 (or .001)
400
Multiply 2.22 by 104
2.22 X 104
22,200
400
How many do you need in a place value to BUNDLE UP to the next place value to the left?
Answer: 10 in a place value turns to one when you go to the left.
Each place value is only supposed to hold one digit numbers. So, the larger digit gets shipped to the next highest place.
Example
12 tenths would bundle 10, into 1 one. It would have 2 tenths left over. That would be 1.2
400
Using >,<, = compare
2 X 1/10 + 3 X 1/100 __________ .230
Answer: =
2 tenths, 3 hundredths = .23
The zero on the end of .230 is the same as nothing. .23 and .230 are the same.
400
What is the Maximum value that could round to 12 in the ones place?
12.4
Our ones neighbor of 4 in the tenths place tells us to round down. It is the largest number that could round down to 12, our the MAXIMUM number to round to 12. As 5 tenths is the midpoint, that and any greater tenth would round up to 13.
400
What is a power of ten?
Bonus double, If you can explain what a power of ten tells you in multiplication or division.
10 to an exponent.
For example 103 is ten to the THIRD power.
Double: the power of tens exponent tells us how many places to move the decimal or shift digits place values.
500
Divide 22,200 by 103
22,200 is the PRODUCT from your last answer. (Vocab, Product is the answer to a multiplication question)
Answer: 22.2
500
DOUBLE POINTS! You MUST complete all parts to get any points. There is question just like this on the quiz ;)
Question: In the number 3.33 how is each digit (each 3) different from one another. Describe each digit value using the words ten times as large, or one tenth as large.
Answer: The 3 in the ones place is 10 times as large as the 3 in the tenths. The 3 in the tenths place is one tenth as large as the 3 in the ones, and 10 times larger than the 3 in the hundredths. The 3 in the hundredths is one tenth as large as the 3 in the tenths place.
*PHEW!
Teacher: Show on place value chart. How by unbundling ones, the 3 becomes 30 tenths. Show by unbundling tenths, the 3 becomes 30 hundredths.
500
Order from least to greatest
0.957
0.94
1.32
0.95
Answer:
0.94 , 0.95 , 0.957 , 1.32
500
DOUBLE POINTS!
Which of these four numbers would round to 1.4?
: 1.352, 1.472, 1.42 , 1.329
Two would round to 1.4
1.42 (2 hundredths would round down)
1.352 (5 in the HUNDREDTHS place would round up to 4 tenths. Ignore the 2 in the thousandths, you are rounding to tenths)
500
What does P.R.I.D.E. Stand for and what does it mean on this assessment?
P - Perseverance
I won’t give up! I will keep trying when it's hard.
R - Resilient
I won’t let it keep me down! If I don't know an answer I will skip it and come back later.
I - Integrity
I will do what I know is right! Follow instructions, I won't distract others by talking, and not look at others work.
D - Diligence
I will do my work fully and correctly! If I know I haven't fully answered a question I will take extra time to make sure it's done all the way.
E - Excellence
I will try my best at everything I do!
500 POINTS FOR EVERYBODY! STUDY HARD!