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Opens on Chapter 16’s example: 67 to the nearest ten, and 1,450 rounded in steps.
Estimate a sum (front-end)
Estimate a division
When you must round up
Enter the numbers from the worksheet, then press Show me.
From the book, Chapter 16. 67 is between 60 and 70 and nearer 70. 1,450 to the nearest thousand is 1,000; rounding it to 1,500 first and then to 2,000 gives the wrong answer. 128 students with 45 to a bus is about 2.84 buses, so 3 buses: nobody can ride in 0.84 of a bus.
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