Prime Factorization
Write the prime factorization for
15
3 x 5
Write each product using an exponent
7 x 7
72
Find each product mentally
9 x 40
360
Estimate by rounding
22 x 7
140
3 x(5 + 3)
24
Write the prime factorization for
36
2 x 2 x 3 x 3
Write each product using an exponent
5 x 5 x 5 x 5 x 5 x 5
56
Find each product mentally
20 x 100
2,000
Estimate by rounding
54 x 17
1,000
3 ( 80 + 9)
267
Write the prime factorization for
63
3 x 3 x 7
2 x 2 x 3 x 4 x 4 x 4 x 5 x 5
22 x 31 x 43 x 52
Find each product mentally
550 x 100
55,000
Estimate by rounding
104 x 41
4,000
8 x (90 + 7)
776
Write the prime factorization for
72
2 x 2 x 2 x 3 x 3
Write each product using an exponent
3 x 4 x 7 x 7 x 3 x 4
32 x 42 x 72
Find each product mentally
1,230 x 1,000
1,230,000
276 x 9
2,800
7 (50 + 8)
406
Write the prime factorization for
104
2 x 2 x 2 x 13
4 x 6 x 6 x 7 x 8 x 8 x 4 x 5 x 5 x 6 x 7 x 1 x 1 x 2
12 x 21 x 42 x 52 x 63 x 72 x 82
Find each product mentally
120 x 100
14 x 1,000
170 x 100
2056 x 1,000
12,000
14,000
17,000
2,056,000
108 x 56
6,600
5 x(30 + 9)
7x (40 + 6)
8 x(20 + 8)
2 x(30 + 7)
195
322
224
74