Read e-book online Addition Made Easy PDF

By Rebecca Wingard-Nelson

ISBN-10: 076602508X

ISBN-13: 9780766025080

E-book via Wingard-Nelson, Rebecca

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The digit 2 is less than 5, so 329 is closer to 300 than to 400. 329 rounds down to 300. 34 550 600 650 700 674 674 has a 7 in the tens place. The digit 7 is greater than 5, so 674 is closer to 700 than to 600. 674 rounds up to 700. Estimate Estimate 329 ϩ 674. 329 rounds to 300. 674 rounds to 700. estimate—An answer that is not exact; a reasonable guess. 300 ϩ 700 1,000 The estimated sum of 329 and 674 is 1,000. What do you do if the two numbers you are adding have different numbers of digits?

Now add the 6 pennies. Begin at 60 and count by ones. After 60 is 61, 62, 63, 64, 65, 66. You have a total of 66 cents. 39 Adding T o add time values, add minutes to minutes, and hours to hours. 2 hours 22 minutes ϩ 5 hours 10 minutes Write the problem in columns. Line up matching units. 2 hours 22 minutes ϩ 5 hours 10 minutes Add minutes first. Add just as you would any two-digit number. 2 hours 22 minutes ϩ 5 hours 10 minutes 32 minutes Add hours. Add just as you would any one-digit number. 2 hours 22 minutes ϩ 5 hours 10 minutes 7 hours 32 minutes The sum of 2 hours 22 minutes ϩ 5 hours 10 minutes is 7 hours 32 minutes.

You have 60¢ so far. Now add the 6 pennies. Begin at 60 and count by ones. After 60 is 61, 62, 63, 64, 65, 66. You have a total of 66 cents. 39 Adding T o add time values, add minutes to minutes, and hours to hours. 2 hours 22 minutes ϩ 5 hours 10 minutes Write the problem in columns. Line up matching units. 2 hours 22 minutes ϩ 5 hours 10 minutes Add minutes first. Add just as you would any two-digit number. 2 hours 22 minutes ϩ 5 hours 10 minutes 32 minutes Add hours. Add just as you would any one-digit number.

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Addition Made Easy by Rebecca Wingard-Nelson


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