Write a number sentence that shows an estimate of each answer. then write the exact answer. 1) 65 +25= 2) 259+43 = 3) 2,009 +995=

Part 1:
65 + 25 can be estimated as 70 + 30 = 100.

The exact answer of 65 + 25 = 90.

Part 2:
259 + 43 can be estimated as 260 + 40 = 300.

The exact answer of 259 + 43 = 302

Part 3:
2,009 + 995 = can be estimated as 2,000 + 1,000 = 3,000.

The exact answer of 2,009 + 995 = 3,004.