Base 10
Read this number:
21
4x4=
16
20+5=
25
20-8=
12
3 groups of 6
18
What is the place value of 3 in 132
30
9x7=
63
171+25=
196
200-34=
166
4 multiplied by 8
32
Write in this number in expanded form: 4,531
4000+500+30+1
22x4=
88
12+60+85=
157
7 less than 10
3
4 columns with 3 boxes each
12
Write this number in expanded form: 132,417
100,000+30,000+2,000+400+10+7
67x5=
335
265+315=
580
Take 13 from 62
49
8 columns of 7 boxes each
56
Read this number:
6,731,247
339x8=
2712
52,175+61,281=
113,456
6306-4378=
1928
12 groups of 8
96