Estimate: What is the length of the soccer field in meters?
Record an estimate that is:
too low
about right
too high
Activity 1
Elena uses 189 square tiles to create a rectangular mural for the art club. The mural is 7 tiles wide.
How many tiles long is Elena’s mural? Explain or show your reasoning.
Write one or more equations that show how you solved this problem.
Activity 2
Tyler is also creating a rectangular mural for the art club. He has 197 tiles for his mural. He wants the mural to be 6 tiles wide with no gaps or overlaps between the tiles.
Will Tyler use all of his tiles in the mural? Explain your reasoning.
How many tiles long will Tyler’s mural be? Show your thinking using diagrams, symbols, or other other representations.
Standards Alignment
Building On
3.MD.7
Relate area to the operations of multiplication and addition.
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.
Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.
Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Apply the area and perimeter formulas for rectangles in real world and mathematical problems. For example, find the width of a rectangular room given the area of the flooring and the length, by viewing the area formula as a multiplication equation with an unknown factor.
Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.
Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.
