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QR Challenge: Estimating Sums and Differences with Decimals

QuestionAnswer
7.1 + 5.613
23.5 + 5.630
33.3 - 10.423
123.2 + 10.4133
73.7 - 20.254
63.6 + 15.680
32.6 + 20.453
86.1 - 40.645
353.6 + 100.4454
99.3 - 63.633
Keep Looking!1
Aw, you didn't get this one!!2
Getting warmer!!!3
Ha ha, not here!4
Keep trying!!5
You're not too good at this, are you?6

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