[[초등수학꿀팁]] 지금보다 10배 빨라지는 계산법 #수학 #계산 #사칙연산(초등학생 필수)
Synopsis
수학 #수학잘하는법 #초등수학 뺄셈을 덧셈으로 풀어보세요. 계산속도가 더 빨라집니다. 꼭 자녀에게 가르쳐 주세요.
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![[수학공부방] 초등부 사칙연산 번갈아 하기 계산연습](https://i.ytimg.com/vi/E1wXUc-0f5k/hq720.jpg?sqp=-oaymwE2CNAFEJQDSFXyq4qpAygIARUAAIhCGAFwAcABBvABAfgBtgiAAoAPigIMCAAQARhoIGgoaDAP&rs=AOn4CLDXeFKCqs4B4dvMIV0TPrnSoExgpA)
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