The principal announced that 50% of the children in Ms. Stanzi's class met their reading goal for the month and that 55% of the children in Ms Lowrey's class met their reading goal for the month. Ms Stanzi said that a greater number of her students met their reading goal. Could Ms Stanzi be correct? Why or Why not.
Ms. Stanzi: Ms. Lowrey:
No, she can't be correct because there is more of an average of students that are meeting their reading goal and the only way Ms. Stanzi could be correct is if a bigger number of kids start improving their reading.
Use a hundred grid (unit square) to illustrate the following questions. Once you have explained and illustrated what the question means solve it.
a) 16 is 40% of what number?
b) What is 120% of 30?
a) 40% of 100 is 40
16 x 0.4=40
40/100 = 16/40
I got this answer by first dividing 40 by 100 and that gives me 0.4.So then you multiply the decimal by the part and that gives you 40% of 16.
b) 120% of 100 is 120
30 x 1.2=36
120/100 = 36/30
I got this answer by first finding out what 120% of 100 is which is 120. So then I divided 120 by 100 which gives me 1.2. Then you multiply by the whole which is 30 by 1.2, and that gives you 36 out of 30.