Math Word Problem Demystified Phần 3 ppsx
Jossey-Bass Teacher - Math Wise Phần 3 ppsx
... +7or3ì7 = 21. By turning the same punched paper sideways and drawing loops in the other direction, it is also possible to show 3 + 3 + 3 +3 +3 + 3 +3or7 3 = 21. 7 + 7 + 7 3 + 3 + 3 + 3 + 3 + 3 ... square the number 3 (also called raising 3 to the second power), means to treat it as 3 2 or 3 × 3, yielding 9. Likewise, 3 3 (read as 3 to the third power or 3...
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