Celia wants to evaluate (6.7 x 10-) - (8.2 x 10-'?). What steps should Cella take to find the difference? Use the drop-down menus to complete the steps.
Step 1. Celia should move the decimal point one place to the Choose...
in 6.7 and Choose..
the exponent
Step 2. Celia should then subtract 8.2 from Choose... to get Choose... v
Step 3. Because numbers written in scientific notation must have Choose... non-zero digit(s) to the left of the decimal point, Cello should
move the decimal point one place to the Choose... and Choose
the exponent