Equations and Expressions

Across

6. a math sentence that compares two values using > < ≤ ≥ 
8. multiplying a sum by a number equals multiplying each addend then adding 
10. the number multiplied by a variable in a term 
11. a math sentence showing two expressions are equal with an equal sign 
13. the space a 3-D object occupies measured in cubic units 
15. a four-sided shape with opposite sides equal and right angles 
16. to find the value of an expression for given numbers 
18. to rewrite an expression in its shortest clearest form 
19. the whole expression with base and exponent or its result 
20. the amount of matter in an object usually in grams or kilograms 
21. a way to write very big or very small numbers as a×10ⁿ

Down

1. a number that multiplied by itself equals the given number 
2. a value that makes an equation or inequality true 
3. the amount of surface a flat shape covers in square units 
4. to break a number or expression into multiplied parts 
5. the total distance around a shape 
7. the usual way to write a number without exponents 
9. the small raised number showing how many times to multiply the base 
12. a letter that stands for an unknown number 
14. a math phrase with numbers variables and operations but no equal sign 
17. how hot or cold something is measured with degrees