On the last period our teacher had 1/2 of an eraser left. she gave that to her two students equally. how much of the eraser did every student take home

1/4 because the whole eraser would be divided into fourths and half was gone so 2/4 was left, so each student would have gotten 1/4
short 1/4

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.