Fractions
1 2/5 + 2 3/4 =
4 3/20
(common denominator = 20
1 2/5 = 1 8/20
2 3/4 = 2 15/20
1 8/20 + 2 15/20 = 3 23/20
3 23/20 = 4 3/20)
7.6 + 0.45 =
8.05
674 divided by 5 =
134 R 4
Round to the nearest tens:
4,603
4,600
25 x 16 =
400
6 1/2 - 4 2/3 =
1 5/6
(common denominator = 6
6 1/2 = 6 3/6
4 2/3 = 4 4/6
6 3/6 - 4 4/6 = 5 9/6 - 4 4/6 = 1 5/6)
10.2 - 5.06 =
5.14
1,200 divided by 7 =
171 R 3
Round to the nearest hundreds:
51,759
51,800
(8 + 4) x 2 =
24
(8 + 4 = 12
12 x 2 = 24)
1 2/3 x 1 4/5 =
3
(1 2/3 = 5/3
1 4/5 = 9/5
taking out trash: 5/3 x 9/5 = 1/1 x 3/1 = 3/1 = 3
not taking out trash: 5/3 x 9/5 = 45/15 = 3)
18 divided by 4.5 =
4
909 divided by 8 =
113 R 5
Round to the nearest tenths:
46.046
46.0
If 3 ft = 1 yd., 1 ft = ? yd.
1/3 yd.
2 1/3 divided by 1 2/5 =
1 2/3
(keep change flip
2 1/3 = 7/3
1 2/5 = 7/5
taking out trash: 7/3 x 5/7 = 1/3 x 5/1 = 5/3 = 1 2/3
not taking out the trash: 7/3 x 5/7 = 35/21 = 1 14/21 = 1 2/3)
3.2 x 0.6 =
1.92
1,371 divided by 6 =
228 R 3
Round to the nearest hundredths:
8.623
8.62
If you start with $20, buy one pack of pencils for $2.50, and two notebooks for $6 each, how much money do you have left?
$5.50
($2.50 + ($6 x 2) = $2.50 + $12 = $14.50
$20 - $14.50 = $5.50)
(6/7 + 5/3) - 1/2 =
2 1/42
(common denominator = 21
6/7 = 18/21
5/3 = 35/21
18/21+35/21 = 53/21
common denominator = 42
53/21 = 106/42
1/2 = 21/42
106/42 - 21/42 = 85/42 = 2 1/42)
(8 divided by 5) x 0.4 =
0.64
(8 divided by 5 = 1.6
1.6 x 0.4 = 0.64)
1,894 divided by 18 =
105 R 4
Round to the nearest thousands:
40,820.986
41,000
If you start reading at 4:32 pm, and read for 39 minutes, what time will it be when you finish reading?
(28 minutes until 5:00pm
39 - 28 = 11
5:00 pm + 11 minutes = 5:11 pm)