You are viewing a single comment's thread from:RE: Arithmetic Trick: Multiplying by 4View the full contextjmcmeekin (55)in #steemiteducation • 7 years ago In my classroom we say: "double and double again" very simple.
Yup, "double and double again". When we use this simple way in multiplying case, we will get the answer easier. Thanks a lot for visiting my post @jmcmeekin