ESTIMATING PRODUCTS WORKSHEET

Problem 1 :

Estimate :

38 x 42

Problem 2 :

Estimate :

203 x 96

Problem 3 :

Estimate :

29.3 x 4.1

Problem 4 :

Estimate :

34.3 x 3.5

Problem 5 :

Estimate :

74.8 x 5.7

Problem 6 :

Estimate :

428.5 x 57.3

Problem 7 :

Estimate :

5283 x 78

Problem 8 :

Estimate :

6523.56 x 73.569

Detailed Answer Key

Problem 1 :

Estimate :

38 x 42

Solution :

In the above product, the numbers can be rounded as given below.

38 -----> 40

42 -----> 40

Now, the above multiplication will become

40 x 40

Then, the estimated product is

=  4 x 4  =  40 -----> 1600

Problem 2 :

Estimate :

203 x 96

Solution :

In the above product, the numbers can be rounded as given below.

203 -----> 200

96 -----> 100

Now, the above multiplication will become

200 x 100

Then, the estimated product is

=  2 x 1  =  2 -----> 20000

Problem 3 :

Estimate :

29.3 x 4.1

Solution :

In the above product, the numbers can be rounded as given below.

29.3  -----> 30

4.1 -----> 4

Now, the above multiplication will become

40 x 4

Then, the estimated product is

=  4 x 4  =  16 -----> 160

Problem 4 :

Estimate :

34.3 x 3.5

Solution :

In the above product, the numbers can be rounded as given below.

34.3  -----> 30

3.5 -----> 4

Now, the above multiplication will become

30 x 4

Then, the estimated product is

=  3 x 4  =  12 -----> 120

Problem 5 :

Estimate :

74.8 x 5.7

Solution :

In the above product, the numbers can be rounded as given below.

74.8  -----> 70

5.7 -----> 6

Now, the above multiplication will become

70 x 6

Then, the estimated product is

=  7 x 6  =  42  -----> 420

Problem 6 :

Estimate :

428.5 x 57.3

Solution :

In the above product, the numbers can be rounded as given below.

428.5  -----> 400

57.3 -----> 60

Now, the above multiplication will become

400 x 60

Then, the estimated product

=  4 x 6  =  24 -----> 24000

Problem 7 :

Estimate :

5283 x 78

Solution :

In the above product, the numbers can be rounded as given below.

5283  -----> 5000

78 -----> 80

Now, the above multiplication will become

5000 x 80

Then the estimated product is

=  5 x 8  =  40 -----> 400000

Problem 8 :

Estimate :

6523.56 x 73.569

Solution :

In the above product, the numbers can be rounded as given below.

6523.56  -----> 7000

73.569 -----> 70

Now, the above multiplication will become

7000 x 70

Then, the estimated product is

=  7 x 7  =  49 -----> 490000

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