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Word Form
Expanded Form
How many times bigger?
Fractions and Decimals
Ordering Decimals
100
Write 189.43 in word form.
One hundred eighty-nine and forty-three hundreths
100
Write 783 in expanded form.
(7x100)+(8x10)+(3x1)
100
Compare the 8s. 82.8
100 times bigger.
100
Write 10.5 as a fraction.
10 5/10 or 10 1/2
100
Order from greatest to least: 0.2 0.4 0.1 0.8
0.8 0.4 0.2 0.1
200
Write Two thousand, six hundred fifty-five and five tenths in standard form.
2655.5
200
Write (8x1000)+(7x10)+(6x1) in standard form.
8076
200
Compare the 4s. 448.3
10 times bigger
200
Write 78/100 as a decimal.
0.78
200
Order from least to greatest 1.3 3.1 0.13 0.31
0.13 0.31 1.3 3.1
300
Write 2000.002 in word form.
Two thousand and two thousandths
300
Write 345.6 in expanded form.
(3x100)+(4x10)+(5x1)+(6x0.1)
300
Compare the 6s 9630.6
1,000 times bigger
300
Write 8.09 as a fraction.
8 9/100
300
Order from least to greatest 0.7 0.77 0.707 0.07
0.07 0.7 0.707 0.77
400
Write Twenty and seven hundreths in standard form.
20.07
400
Write (9x100)+(4x1)+(4x0.1)+(3x0.001) in standard form.
904.403
400
Compare the 1s 813.901
10,000 times bigger
400
Write 384.340 as a fraction.
384 34/100 or 384 340/1000
400
Order from greatest to least: 8.1 8.01 8.11 8.101
8.11 8.101 8.1 8.01
500
Jeremy was asked to write 894.001 in word form. He wrote: Eighty-nine tens, four and one hundredth. Is Jeremy correct? Justify your answer.
Jeremy is not correct. The eight is in the hundreds place so it equals eight hundred and then the nine is in the tens place so it is equal to ninety. The one is in the thousandths place so it is equal to one thousandth. The correct answers is: Eight hundred, ninety-four and one thousandth
500
Claire was asked to write 722.54 in expanded form. She wrote: (7x100)+(2x10)+(2x1)+(.5)+(.4). What is Claire's mistake? Justify your answer.
Claire wrote the whole number correctly but messed up on her decimal. She needs to put the expanded form of .5 (5x0.1) and .04 needs to be in the proper place value and in expanded form. (4x0.01)
500
Mark says 0.8 is 1000 times bigger than 0.008 Is he correct? Justify your answer.
The 8 in 0.8 is in the tenths place. The 8 in .008 is in the thousandths place. Each place value is 10 times bigger than the last and they are two place values apart so the answer should be: 100 times bigger
500
Double Jeopardy! Marco was asked to write 7.75 as a fraction. He wrote 7 3/4. Is Marco correct? Justify your answer.
Yes! He could have written it as 7 75/100 but if he simplified he would find that 7 3/4 is an equivalent fraction.
500
Saul seems to have a hard time ordering decimals. He was asked to order from least to greatest and this was his answer: 9.9 9.09 9.009 9.9090 What would you tell Paul if you were his teacher? How could you fix his misunderstanding?
A decimal isn't bigger just because it has more digits. Look at the digits from left to right and compare them as you go. Etc.