Wednesday 1 August 2018

The meaning of two digit numbers

<img src="https://docs.google.com/drawings/d/e/2PACX-1vRDigQRU9LYL9hNiINf_rLmsP-jpwTYyao1m8hF2vWcaI65sob1YSM-nCAfQcmgPP2Nfc34OeLph6XX/pub?w=1440&amp;h=1080">
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