... decimals: Number Sense and Numeration, Grades 4 to 6 – Volume 6 22 2 2.1 2. 2 2. 3 2 .4 2. 5 2 .6 2. 7 2. 8 2. 9 3 2. 15 2 . 46 2 .6 2. 1 2. 11 2. 12 2.13 2. 14 2. 15 2. 16 2. 17 2. 18 2. 19 2. 2 2. 1511050_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 ... Whole11050_nsn_vol6_ 04. qxd 2/ 2/07 1 :49 PM Page 17 Number Sense and Numeration, Grades 4 to 6 Volume 6 Decimal NumbersA Guide to Effective Instructionin Mathematics,Kindergarten to Grade 6 20 06 11050_nsn_vol6_ 04. qxd...