Standard Form From Nearly Standard Form

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In my remote-ish teaching plan for the widening of provision, we’re starting a thread of work on some proportion stuff. Low prior-attainers will be working on related calculations; and our high prior-attainers will be working on this:

I couldn’t find exclusively questions that deal with the oh-hang-on-is-it-in-standard-form-or-not-right-now, and even though we’re giving this to kids during work around proportion, it interleaves their standard form work and is a great recap for those fiddly index laws, as well as further highlighting the relationship of reciprocals and the related nature of multiplication and division.