Download Addition Made Easy (Making Math Easy) by Rebecca Wingard-Nelson PDF

By Rebecca Wingard-Nelson

ISBN-10: 076602508X

ISBN-13: 9780766025080

ISBN-10: 1429415126

ISBN-13: 9781429415125

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9 ϩ 1 ϭ 10. Regroup 10. 10 tens is is the same as 1 hundred. Write the 0 in the tens place. Carry the 1 to the hundreds column. Three Digits 1 496 ϩ 213 709 Add the numbers in the hundreds column. 1 ϩ 4 ϩ 2 ϭ 7. Write the 7 in the hundreds place. When the sum of the numbers in the hundreds column is more than 9, regroup the hundreds as thousands. In the example below, write a 0 in the hundreds place, and write the 1 in the thousands place. 1 317 ϩ 730 317 ϩ 730 7 317 ϩ 730 47 317 ϩ 730 1,047 29 Adding Greater N umbers that have more than three digits are added the same way as smaller numbers.

The greatest place value of the numbers 329 and 674 is the hundreds place. 329 674 When you round to the hundreds place, look at the tens place. If the digit in the tens place is 5 or greater, round up. If it is less than 5, round down. 300 350 400 450 500 329 329 has a 2 in the tens place. 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.

43 Word M ath problems are everywhere, but they are usually in the form of word problems. Changing word problems into math problems is a skill you use every day. Suppose you collect model cars. You have 17 model cars at home. You find a box at a yard sale that has 9 model cars in it. How many model cars will you have in all if you buy the cars at the yard sale? 44 Problems 1 Read the problem carefully. Find what you know: There are 17 cars at home and 9 at the yard sale. Then find what you want to know: The total number of cars you will have if you buy the ones at the yard sale.

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