Averaging

Estimating

Concept:



How To Use the Concept:

Round to the nearest 100

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Subject:
Lesson:

Round to the nearest 10, 100 and 1000 and then estimate the answer.

1.
42
39+
 2.
17
68+
 3.
39
21+

 4.
75
33+
5.
89
43+
 6.
17
52+
 7.
59
14-
 8.
76
22-
9.
32
19-
 10.
88
49-
 11.
91
27-
 12.
63
37-
13.
646
179+
 14.
236
592+
 15.
840
479+
 16.
586
786+
17.
3,908
1,856+
 18.
4,365
8,586+
 19.
2,781
1,353+
 20.
7,086
1,218+

Your score is out of 20