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Addition using a Chip Abacus

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Addition using a Chip Abacus PowerPoint Presentation

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Published on : Aug 07, 2014
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Slide 1 - Using a Chip Abacus to Show Addition
Slide 2 - Addition using a Chip Abacus Hundreds Tens Ones 152 + 35 Lay out chips to represent each of the numbers in 2 separate groups.
Slide 3 - Addition using a Chip Abacus Hundreds Tens Ones 152 + 35 Now slide all the chips together.
Slide 4 - Addition using a Chip Abacus Hundreds Tens Ones 152 + 35 187 Just read the answer on the chip abacus. 1 chip in the Hundreds column 8 chips in the Tens column 7 chips in the Ones column
Slide 5 - Addition using a Chip Abacus Hundreds Tens Ones Lay out chips to represent each of the numbers in 2 separate groups. 257 +168
Slide 6 - Addition using a Chip Abacus Hundreds Tens Ones Now slide all the chips together. Notice that there are more than 10 chips in the ones column. You will have to make a exchange of 10 chips in the Ones column for one chip in the Tens column. 257 +168
Slide 7 - Addition using a Chip Abacus Hundreds Tens Ones 257 +168
Slide 8 - Addition using a Chip Abacus Hundreds Tens Ones Now slide all the chips together. Notice that there are more than 10 chips in the Tens column. You will have to make a exchange of 10 chips in the Tens column for one chip in the Hundreds column. 257 +168
Slide 9 - Addition using a Chip Abacus Hundreds Tens Ones Get ready to read your answer. 257 +168
Slide 10 - Addition using a Chip Abacus Hundreds Tens Ones Just read the answer on the chip abacus. 4 chip in the Hundreds column 2 chips in the Tens column 5 chips in the Ones column 257 +168 425
Slide 11 - Addition using a Chip Abacus Now you try these problems: 159 + 28 = 23 + 145 = 258 + 349 = 25 + 43 = 149 + 257 = 156 + 244 =