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Lesson: Estimating the Multiplication of Fractions, Mixed Numbers, and Whole Numbers

In this lesson, we will learn how to estimate products of fractions and mixed numbers by rounding them to 0, 1/2, or 1 and use this to solve real-world problems.

Question Video: Rounding the Result of Multiplying Two Fractions to Zero, Half, or One

03:22

Worksheet: Estimating the Multiplication of Fractions, Mixed Numbers, and Whole Numbers • 23 Questions

Q1:

Estimate .

A45
B40
C9
D50
E10

Q2:

Estimate .

A24
B21
C8
D27
E9

Q3:

Estimate .

A24
B18
C4
D30
E5

Q4:

Estimate .

A8
B4
C2
D12
E3

Q5:

Estimate .

A12
B10
C6
D14
E7

Q6:

Estimate .

A20
B16
C5
D24
E6

Q7:

Estimate of 9.

A8
B4
C2
D12
E3

Q8:

Estimate of 34.

A28
B24
C7
D32
E8

Q9:

Estimate by rounding to 0, , or 1.

A1
B0
C2
D

Q10:

Estimate by rounding to 0, , or 1.

A
B1
C2
D0

Q11:

Estimate by rounding to 0, , or 1.

A
B1
C2
D0

Q12:

Estimate by rounding to 0, , or 1.

A1
B0
C2
D

Q13:

Estimate by rounding to 0, , or 1.

A
B1
C2
D0

Q14:

Estimate by rounding to 0, , or 1.

A
B1
C2
D0

Q15:

Estimate by rounding to 0, , or 1.

A0
B1
C2
D

Q16:

Estimate .

A10
B13
C2
D15
E3

Q17:

Estimate .

A10
B14
C2
D15
E3

Q18:

Estimate .

A20
B16
C25
D9
E24

Q19:

Estimate .

A64
B72
C56
D16

Q20:

Estimate .

A10
B12
C6
D5

Q21:

Estimate .

A27
B30
C40
D36

Q22:

Estimate .

A70
B63
C54
D60

Q23:

If we estimate fractions by rounding to the nearest half, which of the following pairs of fractions have an estimated difference of and an estimated product of ?

A ,
B ,
C ,
D ,
E ,

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