Division

Divide 3050 by 3.28.

Again, the rough calculation. This is approximately 3000 divided by approximately 3. The answer will be just under 1000, i.e. about nine hundred and something.

Find 3050 on the outer scale and align the cursor. Now find 3.28 on the inner scale and align it with the cursor. It should then look as in Figure below.

Now find 10 on the inner scale and read off against the outer scale, as in Figure 5 below.

The initial answer is 93.0. Is this the right order of magnitude? We know from our rough calculation that it should be about 900, so the correct answer must be 930.

Next: Rates and Ratios

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