Crossword "Entertaining Mathematics"

Vertical:

1. The smallest four-digit number.

2. The name of a series of numbers connected by action signs.

3. First month of the year.

4. The number obtained by addition.

5. Measure of liquids.

6. The name of the action mark.

7. Measure of mass.

8. Arithmetic action.

Horizontal:

6. Name of the month.

9. A few units.

10. The largest of integers satisfying the inequality x

11. Measure of length.

12. A figure obtained by crossing two straight lines.

13. A number expressed by a unit of the sixth rank.

14. A sign showing the absence of units of any category.

15. A figure bounded by a circle.

16. The smallest single number.

Answers:
Vertical: 1,000, 2 example, 3 January, 4 amount, 5 liters, 6 minus, 7 tons, 8 division.
Horizontal: March 6, the 9th, 10 four, 11 meters, 12 goals, 13 million, 14 zero, 15 laps, 16 one.