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MATHEMATICAL CROSSWORD PUZZLES


ACROSS
1. 253 plus thirty-nine. 50% of twelve. 203 plus 206, minus twenty-one.
2. Seven squared minus ten. 7140 divided by ten, minus six. Its half is 27.
3. Its half is four and one half. 25% of 28. In binary representation is 111. 50% of fourteen.
4. 469 minus fifty-three, minus twenty-three. 1108 minus 456.
5. Its double is 106. Twenty-four times seven, minus eighty-five.
6. 117 plus 652. 702 minus eighty-eight, plus forty-three.
7. Five times two minus one. Angles in a heptágono. Term that in Fibonacci series goes before 13. In binary representation is 1000.
8. In Roman numerals is LIV. 567 divided by three. 131 minus thirty-five.
9. 1932 divided by four. 10% of 90. Eighty-six times seven.

DOWN
1: 666 minus 427. Two plus three. 1025 minus thirty-three, minus thirty-eight.
2: 18000 divided by one thousand, plus eighty-one. 1600 divided by twenty-five, plus 273. Two to the power five plus sixteen.
3: 25% of eight. Sides in a nonagon. Two times three. Twelve minus nine.
4: 910 minus 423, plus 286. 1046 minus 870, plus 795.
5: Sexagesimal system base. Fifty-two times three, minus sixty-seven.
6: Forty-two times twenty, plus thirty-six. 873 minus 788, plus 604.
7: One plus two. Straight lines in a staff. Sides in a pentagon. 10% of 60.
8: 220 minus 201, plus sixty-six. 287000 divided by one thousand. Eighty-four plus six.
9: 720 divided by nine, plus 767. Sides in a triangle. 0,862 times one thousand.