![Stop saying "Just add zeros"!](https://static.wixstatic.com/media/1dc083_3f8105faa45b421392d03c17ffa515b0~mv2.png/v1/fill/w_411,h_240,fp_0.50_0.50,q_95,enc_auto/1dc083_3f8105faa45b421392d03c17ffa515b0~mv2.png)
Stop saying "Just add zeros"!
I wish primary school teachers would stop teaching students that you just add zeros when multiplying by multiples of 10. It often leads...
![](https://static.wixstatic.com/media/1dc083_bad5c473fb404132a418063f16be34a7~mv2.jpg/v1/fill/w_250,h_250,fp_0.50_0.50,q_30,blur_30,enc_auto/1dc083_bad5c473fb404132a418063f16be34a7~mv2.jpg)
![Using only one hand?](https://static.wixstatic.com/media/1dc083_bad5c473fb404132a418063f16be34a7~mv2.jpg/v1/fill/w_524,h_393,fp_0.50_0.50,q_90,enc_auto/1dc083_bad5c473fb404132a418063f16be34a7~mv2.jpg)
Using only one hand?
I have noticed this year that very curiously many young students are doing maths with one hand on the side of their seat while the other...