history of number
IV x VI
24
what's the place value of 3 in 3025?
Thousands
6+550
555
20, 25, 30, , 40, , , 55
35, 45, 50
10 x (4+5)
90
V x VI
30
tenswhat's the place value of 6 in 65?
tens
12-6
6
100, 95, , , 80, 75
90, 85, 70
(5-3)+(6x2)
14
X x II
20
what's the place value of 1 in 9921?
ones
7-1
6
500, , 300, , 0
400, 200, 100
2+5x4
22
what is this number? VIII
8
what's the place value of 2 in 233?
hundreds
55+300
355
what's the missing number? 5078, 4078, , 2078
3078
3x5-1
14
what is IX?
9
what's the place value of 5 in 5090?
ten thousands
600+356
956
what's the missing number? 6789, 6689, , 6489
6589
4x10+50-20
70