Basic math symbol

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Across
  1. 3. is used to indicate repeated multiplication of a number by itself a certain number of times
  2. 5. is a remainder calculation
  3. 9. "=" is used to indicate equality
  4. 10. It separates the whole part of a number from its fractional or decimal part
  5. 13. is a way to express a number as a fraction of 100
  6. 14. is also known as square brackets []
  7. 15. is commonly used as a symbol to represent multiplication
  8. 16. is a vise versa of equality
  9. 18. it consists of two numbers separated by a horizontal line
  10. 19. root is represented by the radical symbol with a small 3 as an index or exponent (∛)
Down
  1. 1. refers to finding an approximate or close value for a number
  2. 2. than is a strict inequality
  3. 4. It is used to indicate the operation of combining two or more quantities to find their sum
  4. 6. it can be represented as (x) or (*)
  5. 7. It's a way to express uncertainty or that a value could vary within a certain range
  6. 8. is represented using the minus sign
  7. 9. The base number is raised to the power of the exponent
  8. 11. it indicates the operation of taking the root of a number
  9. 12. it calculate the expression inside first
  10. 17. it involves splitting a quantity or a set of items into equal parts