Expanded to Standard Form
1,000 + 200 + 30 + 4 + .5
1234.5
Round 2.61 to the nearest tenths place.
2.6
Which number is prime?
2, 4, 6
2
List all factor pairs of 15.
(There are 2 pairs in total)
1, 15
3, 5
12
2 x 2 x 3
or
22 x 3
9 ÷ 3 x 4
12
7 x 5 - 22
31
2 hundreds, 3 tens, 5 ones, 6 tenths
235.6
Round 4.92 to the nearest ones place.
5
Which number is prime?
40, 41, 42
41
List all factor pairs of 46.
(There are 2 pairs in total)
1, 46
2, 23
16
2 x 2 x 2 x 2
or
24
8 x 2 + 5 - 6
15
72 ÷ (4 + 3) =
7
300 + 40 + 7 + .9 + .07
347.97
Round .321 to the nearest hundredths place.
.32
Which number is composite?
13, 31, 39
39
List all factor pairs of 63.
(There are 3 pairs in total)
1, 63
3, 21
9, 7
20
2 x 2 x 5
or
22 x 5
10 + 5 x (9 - 4)
35
(23 + 4) ÷ (9 - 6) =
4
5 thousands, 9 hundreds, 0 tens, 8 ones, 3 tenths
5,908.3
Round $11.81 to the nearest one dollar.
$12.00
Which number is prime?
12, 15, 29
29
List all factor pairs of 24.
(There are 4 pairs in total)
1, 24
2, 12
3, 8
4, 6
36
2 x 2 x 3 x 3
or
22 x 32
10 x (6 + 3) ÷ 2
45
(3 + 52 - 8) x 4 =
80
1,000 + 600 + 40 + 8 + .7
1,648.7
Round $42.89 to the nearest one dollar.
$43.00
Which number is composite?
97, 83, 125
125
List all factor pairs of 48.
(There are 5 pairs in total)
1, 48
2, 24
3, 16
4, 12
6, 8
42
2 x 3 x 7
(52 - 3) + 7
29
(3 x 10 - 20) + (2 x 5) + 62
56
8 thousands, 0 hundreds, 5 tens, 2 ones, 3 tenths
8,052.3
Round $538.70 to the nearest ten dollars.
$540.00
Which number is composite?
31, 41, 51
51
List all factor pairs of 148.
(There are 3 pairs in total)
1, 148
2, 74
4, 37
96
2 x 2 x 2 x 2 x 2 x 3
or
25 x 3
2 x (33 - 5 + 8) =
60
(32 + 11) ÷ 4 + 52 - 30
0