Scoring rubric for the diagnostic quiz:
1.5 2.8 .2 3.14 66.66The number to the left of the decimal point is an ordinary number. The number to the right of the decimal is the "tenths" digint and tells you the number of 1/10 ths that are added to the whole number.
4.2 5. .02 66.6
+3.5 + .2 <==add zeroes==> +1.6 + 88.
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3.8 4.93 <== let students tell ==> 145. 58.2
-1.6 -1.8 you where to write - .04 -19.9
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