Edexcel IGCSE Maths复习笔记1.1.3 Multiplying & Dividing Fractions
Edexcel IGCSE Maths复习笔记1.1.3 Multiplying & Dividing Fractions
Dealing with mixed numbers
- Always turn Mixed Numbers into Top Heavy Fractions before doing calculations
Dividing fractions
- Never try to divide fractions
- Instead “flip’n’times”
- So “÷a/b” becomes “×b/a”
- And follow the rules for multiplying…
Multiplying fractions
- Simplify by factorising and cancelling (ignore the × between the fractions)
- Multiply the tops
- Multiply the bottoms
- Simplify by factorising and cancelling (if you missed something earlier)
- Turn Top Heavy Fractions back into Mixed Numbers (if necessary)
转载自savemyexam
国际竞赛真题资料-点击免费领取！
美高学分项目重磅来袭！立即了解
AMC8备考管家服务全新上线！
