Excuse me, is there a simple calculation for 69 + 200 △ 25 × 13?

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• 5. Simple calculation: 999.9 * 0.28-0.666 * 370 The answer is 33.552
• 6. 999 * 2224 + 6666 * 16642012 * 2012-2010 * 20111999 + 199.9 + 19.99 + 1.999 how to calculate easily? 999 * 2224 + 6666 * 16642012 * 2012-2010 * 20111999 + 199.9 + 19.99 + 1.999 how to calculate easily?
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• 9. When an integer is multiplied by 13, the last three digits of the product are 123. What is the minimum number of such an integer?
• 10. After a three digit number is multiplied by 13, the last three digits of the product are 123. Find this number
• 11. 963 × 123-321 × 69
• 12. 123123… What is the remainder of 123 divided by 99?
• 13. The sum of 123 + 2 times 123 + 3 times 123 +. + 123 times 123 divided by 7 is the remainder
• 14. The following numbers that must have no square root are the Square-1 of a, - a B, - a C, - A There must be no square root in the following numbers A. - a B, - a C, - a squared - 1 D, - A-1
• 15. What is the number whose absolute value (reciprocal, inverse, power, cube, square root, cube root) is equal to itself? Greater than or less than?
• 16. What is the arithmetic square root of five?
• 17. How to find the square root of the second power of (- 4 / 13)?
• 18. The arithmetic square root of the difference between the square of 13 and the square of 12
• 19. The following statement is true: A, the square root of a is + - root a B, the arithmetic square root of a is root a C, and the arithmetic cube root of - A is triple root a
• 20. If 2m + 6 and N-10 are the square roots of a real number and 4m + n = 7, find the value of M and n