Base-Ten System
Value of 7 in 279,364
70,000
Five ways to make 8
1+7, 2+6, 3+5, 4+4, 0+8
8-0, 9-1, 10-2, 11-3, 12-4, 13-5, 14-6, 15-7, 16-8
17-9, 18-10, 19-11, 20-12
5x1
5
7x5
35
Any number divided by itself
1
Digit in 568,241 in the thousands place
8
Five ways to make 10
0+10, 1+9, 2+8, 3+7, 4+6, 5+5
10-0, 11-1, 12-2, 13-3, 14-4, 15-5, 16-6, 17-7,
18-8, 19-9, 20-10
2x6
12
6x6
36
A number divided by 1
Round 15,264 to the nearest ten
15,260
Five ways to make 12
1+11, 2+10, 3+9, 4+8, 5+7, 6+6
13-1, 14-2, 15-3, 16-4, 17-5, 18-6, 19-7, 20-8
3x3
9
8x4
32
0
Round 347,383 to nearest thousand
347,000
Five ways to make 18
0+18, 1+17, 2+16, 3+15, 4+14, 5+13, 6+12, 7+11, 8+10, 9+9
18-0, 19-1, 20-2, 21-3, 22-4, 23-5
4x6
24
9x6
54
81/3
27
The reasonable estimate for total number of people that saw the movie if there were 326 people at a matinee movie and there were 486 people for the 7:00 pm showing.
800
Five ways to make 20
20+0, 19+1, 18+2, 17+3, 16+4, 15+5, 14+6, 13+7, 12+8, 11+9, 10+10
20-0, 21-1, 22-2, 23-3, 24-4, 25-5
5x0
0
10x10
100
121/11
11