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15
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Here is how Elena found the value of 15.37 - 8.19. Explain Elena's calculations and the meaning of the 15 above the 5 and the 17 above the 7 in 15.37.
Elena could not subtract 9 hundredths from 7 hundredths so she broke up a tenth from 15.37 to make 10 hundredths and then subtracted...
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15
×
Use the standard algorithm to calculate 52.63 - 17.55.
35.08
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15
×
Find the value of the expression 215.7 + 64.94.
280.64
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15
×
Find the value of 3.62 + 1.49.
5.11
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15
×
Find the value of 9.36 - 6.52.
2.84
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lifesaver
Give 20 points!
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rocket
Go to first place!
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shark
Other team loses 5 points!
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baam
Lose 5 points!
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15
×
Find the value of this expression. 37.06 - 22.57
14.49
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25
×
Mai and Tyler were playing โTarget Number Addition.โ Mai rolled 6 sixes. How close can Mai get to 1 without going over?
Mai can get 0.9. She can choose one 0.6 and the rest have to be 0.06 or else she goes over.
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15
×
Find the value of this expression. 555 - 4.44
550.56
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banana
Go to last place!
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magnet
Take 10 points!
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fairy
Take points!
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25
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banana
Go to last place!
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20
×
Which whole number is 3.62 + 1.49 closest to? Explain or show your reasoning.
Sample response: The whole numbers add up to 4 and the two decimals are a little more than 1, but close to 1.
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15
×
Which whole number is 9.36 - 6.52 closest to? Explain or show your reasoning.
3 because 9 - 6 = 3 and the decimal parts of the two numbers are pretty close in value.
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25
×
Mai and Tyler were playing โTarget Number Addition.โ Tyler rolled 6 fours. How close can Tyler get to 1 without going over?
Tyler can get 0.96. He can choose two 0.4s and the rest have to be 0.04 or else he goes over.
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thief
Give points!
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25
×
rocket
Go to first place!
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rocket
Go to first place!
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baam
Lose 10 points!
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