Estimating
Estimate 2,189 + 1,388
2,200 + 1,400 = 3,600
9,945 + 3,343 = n
n= 13,288
412,765 - 402,120 = n
n= 10,645
5,000 + 2,058 = n
n= 2,942
True or False: 20,400 - 9,280 = 10,120
False: 20,400 - 9,280 = 11,120
Estimate 9,245 + 4,033
9,200 + 4,000 = 5,200
12,566 + 5,532 = n
n= 18,098
8,737 + 6,754 = n
n = 1,983
61,070 - 4,981 = n
n= 56,089
Mooney subtracted 342,139 from 601,800 and got 359,661. Is his answer correct? If not what is the correct answer?
he is not correct. The correct answer is 259,661.
Estimate 48,765 + 9,221
49,000 + 9,000 = 58,000
39,749 + 27,662 = n
n= 67,411
17,863 - 3,737 = n
n = 14,116
40,000 - 29,526 = n
n= 10,474
1,000,000 - 447,618
552,382
Estimate: 812,910 - 709,085
810,000 + 710,000 = 100,000
387,969 + 562,031 = n
n= 950,000
67,451 - 29,609 = n
n= 37,842
214,507 - 83,569 = n
Jimmy ran every day at the dog park for three weeks. The first week he ran 19,789 steps. The second week he ran 22,909 steps. The third week he ran 59,545 steps. How many more steps did he run in week 3 than in weeks 1 and 2 combined?
16,847 steps
Estimate 391,192 + 511,864
390,000 + 510,000 = 900,000
629,979 + 294,116 + 75,905 = n
n= 1,000,000
513,363 - 382,895 = n
n = 140,568
600,470 - 307,299 = n
n= 293,171
There are 3,032,054 black and brown rats in New York City. 1,158,278 are black rats. How many are brown rats?
1,873,776 are brown rats.