The third graders have 250 erasers and scissors in the school store. They sell 47 erasers and 33 pens. How many erasers and scissors are left in the store? Show your work.
170
20
256 + 365
621
15
432 − 176
256
15
409 + 437
846
15
706 − 427
279
15
Which equations model the most reasonable estimate of the difference?
b and c
15
Find the difference. 786 − 213
573
15
Which equations model the most reasonable estimate of the sum? 719 + 189
