Download Estimate Quotients

LESSON 14.1
Name
Estimate Quotients
Compatible numbers are numbers that are close to the
actual numbers and can be divided evenly. They can
help you estimate a quotient.
43
9
5
Estimate.
Step 1
Round the dividend to a number
that can be divided evenly by the
divisor.
The number 395 can be rounded to
360. This number can be divided
evenly by 4. The number 395 can
also be rounded to 400. This number can also be divided evenly by 4.
Step 2
Rewrite the division problem with
the compatible numbers, and solve.
90
43
6
0
100
44
0
0
So, one estimate of the quotient is
90. A second estimate is 100.
Write two pairs of compatible numbers for each. Give two
possible estimates. Two possible pairs and their estimates are given.
1.
74
6
2.
53
7
3.
6
74
2
7
74
9
© Harcourt
4.
83
,0
6
2
300
82
,4
0
0
400
83
,2
0
0
64
4
3
7
53
5
8
54
0
5.
76
,5
2
1
900
76
,3
0
0
1,000
77
,0
0
0
70
64
2
0
80
64
8
0
6.
93
1
5
40
93
6
0
30
92
7
0
Reteach
RW71
LESSON 14.1
Name
Estimate Quotients
Compatible numbers are numbers that are close to the
actual numbers and can be divided evenly. They can
help you estimate a quotient.
43
9
5
Estimate.
Step 1
Round the dividend to a number
that can be divided evenly by the
divisor.
The number 395 can be rounded to
360. This number can be divided
evenly by 4. The number 395 can
also be rounded to 400. This number can also be divided evenly by 4.
Step 2
Rewrite the division problem with
the compatible numbers, and solve.
90
43
6
0
100
44
0
0
So, one estimate of the quotient is
90. A second estimate is 100.
Write two pairs of compatible numbers for each. Give two
possible estimates. Two possible pairs and their estimates are given.
1.
74
6
2.
53
7
3.
6
74
2
7
74
9
© Harcourt
4.
83
,0
6
2
300
82
,4
0
0
400
83
,2
0
0
64
4
3
7
53
5
8
54
0
5.
76
,5
2
1
900
76
,3
0
0
1,000
77
,0
0
0
70
64
2
0
80
64
8
0
6.
93
1
5
40
93
6
0
30
92
7
0
Reteach
RW71