Rounding
Round 4 to the nearest tens
0
Estimate the sums
26 + 15
30 + 20 = 50
Estimate the difference
34 - 23
30 - 20 = 10
What would the estimated sum of 35 + 56 be?
40 + 50 = 100
There are 5 apple trees in the park. 12 more apple tress were planted. Estimate how many apple trees are in the park.
10 + 10 = 20
Round 19 to the nearest tens
20
37 + 44
40 + 40 = 80
Estimate the difference
54 - 49
50 - 50 = 0
What would the estimated difference of 89 - 45 be?
90 - 50 = 40
Mya picked 14 limes and Dan picked 18 limes. Estimate how many limes they picked together.
10 + 20 = 30
Round 86
90
Estimate the sum
7 + 88
10 + 90 = 100
Estimate the difference
88 - 7
What would the estimated difference of 76 and 31 be?
80 - 30 = 50
Jessica is reading a book that has 75 pages. She read 43 pages. About how many pages does Jessica have left to read?
80 - 40 = 40
Round 154 to the nearest tens
150
Estimate the sum
92 and 46
90 +50 = 140
Estimate the difference
92 and 46
90 - 50 = 40
What would the estimated sum of 26 + 79 be?
30 + 80 = 110
Joe's school sold 53 boxes of doughnuts for a fundraiser. Bella's school sold 38 boxes of doughnuts. About how many boxes of doughnuts did the schools sell in all?
50 + 40 = 90
What two decade numbers is 73 between?
70 and 80
Estimate the sum
99 and 36
100 + 40 = 140
Estimate the difference
99 and 36
100 - 40 = 60
What would the estimated difference of 112 and 14 be?
110 - 10 = 100
65 rounds to 70