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Numbers课件2.ppt

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m most ordinal numbers by adding _______to the cardinal numbers. There are exceptions, like first , second and third . th A. Cardinal and ordinal numbers 1 (2) ____ 3412 (6) ____ 2328 May Alan Danny Jane Peter Alice Steve Zoe May is the (1) _______. Alan is the second. Danny is the (3) _____. Jane is the (4) ______. Peter is the (5) ______. Alice is the eenth. Seveve is the (7) ______. Zoe is the (8) _______. first third fourth twelfth twenty-third twenty-eighth 219 B. Instruction about numbers 3+9 9-3 3*9 9/3 Add 3 and 9 Subtract 3 from 9 Multiply 3 by 9 Divide 9 by 3 3 plus 9 equals/is 12. 9 minus 3 equals/is 6. 3 multiplied by 9 equals/is 27. 9 divided by 3 equals/is 3. 3+9=12 9-3=6 3* 9=27 9/3=3 plus and minus are prepositions

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