A tablecloth measure 20 dm long and 15 dm wide. Lei want to put a lace around it. How many decimeters of lace will sh buy to decorate its sides? 1. What is asked? 2. What are the given facts? 3. What is the process needed? 4. What is the number sentence? 5. What is the answer?
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Answer:
1. The decimeters of lace that she will buy to decorate the sides of tablecloth.
2. 20 dm long and 15 dm wide
3. Formula of Area, l•w, multiplication
4. l•w= n
20•15= n
5. 20•15= 300
she needed to buy 300 decimeters of lace to decorate its sides.