28
28 rounded to the nearest 10 is 30
504
500
58 + 30
ANSWER: 88
ESTIMATED: 90
64 - 30
ANSWER: 34
ESTIMATED: 30
Round 55 to the nearest 10
60
42
42 rounded to the nearest 10 is 40
278
300
64 + 27
ANSWER: 91
ESTIMATED: 90
98 - 49
ANSWER: 49
ESTIMATED: 50
What two numbers (10's facts) is 74 in between?
70 and 80
65
65 rounded to the nearest 10 is 70
217
200
102 + 50
ANSWER: 152
ESTIMATED: 150
153 - 27
ANSWER: 126
ESTIMATED: 130
What number in the middle of 30 and 40?
35
144
144 rounded to the nearest 10 is 140
888
900
216 + 95
ANSWER: 311
ESTIMATED: 310
271 - 88
ANSWER: 183
ESTIMATED: 180
Draw a number line and plot the number 130, rounded to the nearest 100.
Teacher will check!
387
387 rounded to the nearest 10 is 390
945
900
532 + 57
ANSWER: 589
ESTIMATED: 590
843 - 211
ESTIMATED: 630
5 or more, let it sore
4 or less, let it rest!