Rounding/Estimating
Round this decimal to the nearest WHOLE number.
2.6
3
Add
8.7 + 3.7 =
12.4
Subtract
6.9 - 5.1 =
1.8
What is the value of the 6 in 2464?
The value of the 6 is 60
Mike has two pencils that he sharpened many times. One pencil is 4.8 inches long, and the other pencil is 3.25 inches long. How much longer is the first pencil that the second pencil?
1.55 inches
Round this number to the nearest tenths.
26.31
26.3
Add
7.1 + 5.6=
12.7
Subtract
6.92 - 5.13 =
1.79
34 + 18 =
34 + 18 = 52.
The fruit stand sold:
25.5 lbs. of apples,
16.25 lbs. of pears, and
17.373 lbs of oranges.
How many pounds of fruit did they sell altogether?
59.123
ESTIMATE the sum.
358 + 293=
700
Add
2.09 + 9.18=
11.27
Subtract
89.3 - 4.9 =
84.4
What is the sum of 340 + 104?
340 + 104 = 444
Sara bought a hot dog for $2.50 and a soda for $1.25 at the county fair. She paid with a $10.00 bill. How much change did she get back?
$6.25
ESTIMATE THE SUM.
15.01 - 4.4 =
11
Add
7.91 + 8.43 =
16.34
Subtract
23.69 - 12.22
11.47
My little brother collects a variety of rocks. On Monday he found 105 tiny blue pebbles. On Tuesday he found 97 small quarts rocks. How many total rocks did my brother find?
105 + 97 = 202 rocks
My family and I went on a long road trip last weekend. On Saturday we drove 194 miles. On Sunday we drove 186 miles. How far did we drive last weekend?
194 + 186 = 380 miles
Estimate the difference.
22.4 - 16.2 =
5
Add
5.05 + 0.22 + 17.41 =
22.68
Subtract
1.67 - 0.97
0.7
John has 235 basketball cards, 302 baseball cards, and 109 football cards. How many total cards does John have?
235 + 302 + 109 = 646 total cards.
My brother and I both love to play with Legos. We decided to combine our legos so we could build something really big. If my brother had 755 and I had 708. About how many legos do we have to work with now?(Round)
800 = 700 = 1500 legos