... Whole11050_nsn_vol6_ 04. qxd 2/2/07 1 :49 PM Page 17 Number Sense and Numeration, Grades 4 to 6 Volume 6 Decimal Numbers A Guide to Effective Instructionin Mathematics,Kindergarten to Grade 6 20 06 11050_nsn_vol6_ 04. qxd ... asked to order 6. 52, 5.9, 6 .48 , 6. 23, and 6. 7, students can use 6. 5 as the halfway point between 6 and 7. Students should recognizethat 5.9, 6. 23, and 6 .48 are all less than 6. 5, and 6. 52 and 6. 7 ... therelative size of the decimal numbers. Number Sense and Numeration, Grades 4 to 6 – Volume 6 20 40 cm or 4 tenths =0 .4 55 4 5352515I used the metre stick as one whole, or 1. To figure out where...