Across

1 A square number
3 2 down divided by eight
5 A prime number
7 8 across plus 140
8 29 across times 5 across
9 4 down plus ten
11 9 across plus eighty-eight
13 1 across times eight
15 13 across divided by six
16 12 down divided by eleven
17 12 down minus 150
20 13 down minus 167
22 11 across minus thirty-nine
24 1 down times 28 across
25 A square number
27 A prime number
28 Five times 26 down
29 1 across plus thirty-four

Down

1 10 down minus fifteen
2 Six times 25 across
3 Twelve times 27 across
4 3 across plus eighty
5 Eleven times 3 down
6 26 down minus thirty
10 28 across divided by four
11 8 across divided by five
12 5 down divided by twelve
13 28 across plus ninety-one
14 13 across times three
18 5 down plus 1221
19 6 down times two
21 25 across plus 1003
22 14 down plus thirty-eight
23 8 across divided by seven
24 19 down plus fifty-five
26 27 across minus nineteen