JAM 3

Posted by Jennifer on January 19, 2015 in Homework |

JAM

Monday

Estimate to the wholes place, then solve:

  1. 25.42+68.59
  2. 748.02+89.49
  3. 864.9-632.6
  4. 79.2-43.8
  5. 496.25×73

Tuesday

Round the following numbers:

Numbers To the nearest ones To the nearest tenths To the nearest hundredths To the nearest thousandths
745,814.02
906.759
1,249.65
19,862.0098
82.7506

Wednesday

  1. 7,468/45
  2. 3,204/92
  3. 5,023/67
  4. 754/28
  5. 9,314/39

Thursday

  1. 748×36
  2. 4,397×84
  3. 458×79
  4. 3,246/34
  5. 4,896/62

Friday

During an average summer day, people in Dover use 8,476 kilowatts of electricity from water and 7,093 kilowatts from coal. In total, about how many kilowatts of electricity does the city use on an average summer day? Choose the better estimate.

  1. 1,000
  2. 10,000
  3. 15,000
  4. 20,000

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