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Java Games: Flashcards, matching, concentration, and word search. |
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Estimating Large Sums and Differences & Addition Properties
Estimate to the GREATEST PLACE
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| A | B |
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| 686 + 231 | 900 |
| 346 - 188 | 100 |
| 706 + 197 | 900 |
| 4,673 - 3,927 | 1,000 |
| 9,706 + 3,048 | 13,000 |
| 92,545 - 36,789 | 50,000 |
| 679 + 291 | 1,000 |
| 423 - 201 | 200 |
| 63,947 - 12,508 | 50,000 |
| 47,031 + 58,098 | 110,000 |
| Commutative Property of Addition | You can change the order of addends without changing their sum. |
| Associative Property of Addition | You can change the grouping of addends without changing their sum. |
| Identity Property of Addition | You can add zero to a number and the sum will always be that number. |
| Identity Property of Addition | ME RULE |
| Associative Property of Addition | BUDDY RULE |
| Commutative Property of Addition | FLIP FLOP RULE |
| Evaluate | To solve, replace the variable with vlaue and solve. |
| Expression | Any mixture of operation signs, variables, and numbers. |
| Variable | A letter or symbol that stands for a number. |
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