Transcript 5.3 Regrouping with Mixed Numbers

5-3 Regrouping to Subtract Mixed Numbers
Warm Up
Problem of the Day
Lesson Presentation
Lesson Quizzes
5-3 Regrouping to Subtract Mixed Numbers
Do Now
Add or subtract. Write each answer in simplest form.
3 + __
1
1. __
8
6
1
5 – __
2. __
12
6
13
__
24
1
__
4
1 + __
1
3. __
6
8
7
__
24
3
4. Bonnie is making oatmeal bars and the recipes calls for __
1 cup of brown sugar, how 4
cup of brown sugar. If she has __
3
much more does she need?
5 cup
__
12
5-3 Regrouping to Subtract Mixed Numbers
Objective
SWBAT to add and subtract mixed
numbers by regrouping.
5-3 Regrouping to Subtract Mixed Numbers
5-3 Regrouping to Subtract Mixed Numbers
Ex. 1 : Regrouping Mixed Numbers
Add. Write each answer in simplest form.
1
3
5 __ +
3
2 __
4
• Add the whole numbers
• Add the fractions
• If you have an improper faction,
simplify it to a mixed number.
• Add it to the original whole
number
5-3 Regrouping to Subtract Mixed Numbers
Ex. 2
Add. Write each answer in simplest form.
7
1
5
__
+ 2 __
4
6
• Add the whole numbers
• Add the fractions
• If you have an improper faction,
simplify it to a mixed number.
• Add it to the original whole
number
5-3 Regrouping to Subtract Mixed Numbers
3
Jimmy and his mother planted a tree when it was 1__ ft
4
1
tall. Now the tree is 2 __ ft tall. How much has the tree
4
grown since it was planted?
The difference in the heights can be represented by
1
3
__
__
2 4 – 1 4.
1
__
You will need to regroup 2 4 because the fraction
3
1
__
__
in 1
is greater than
.
4
4
5-3 Regrouping to Subtract Mixed Numbers
Ex. 3: Regrouping Mixed Numbers
Subtract. Write each answer in simplest form.
2
7
__
__
8
– 6
5
10
• Subtract the fractions
• If the first fraction is less than
the second fraction, then borrow
from the whole number.
• Subtract the whole numbers
• Simplify
5-3 Regrouping to Subtract Mixed Numbers
Ex. 4
Subtract. Write each answer in simplest form.
2
__
6–3
3
• Subtract the fractions
• If the first fraction is less than
the second fraction, then borrow
from the whole number.
• Subtract the whole numbers
• Simplify
5-3 Regrouping to Subtract Mixed Numbers
Ex. 5: Measurement Application
Li is making a quilt. She needs 15 yards of fabric.
3
__
Li has 2
yards of fabric. How many more yards does
4
she need?
5-3 Regrouping to Subtract Mixed Numbers
Ex. 6: Measurement Application
If Li uses 11
1
__
yards of fabric, how much of the 15
6
yards will she have left?
5-3 Regrouping to Subtract Mixed Numbers
Lesson Quizzes
Standard Lesson Quiz
Lesson Quiz for Student Response Systems
5-3 Regrouping to Subtract Mixed Numbers
Lesson Quiz
Subtract. Write each answer in simplest form.
1.
2.
3.
4.
5-3 Regrouping to Subtract Mixed Numbers
Lesson Quiz for Student Response Systems
1. Subtract and identify the answer in
simplest form.
A.
C.
B.
D.
5-3 Regrouping to Subtract Mixed Numbers
Lesson Quiz for Student Response Systems
2. Subtract and identify the answer in
simplest form.
A.
C.
B.
D.
5-3 Regrouping to Subtract Mixed Numbers
Lesson Quiz for Student Response Systems
3. Subtract and identify the answer in
simplest form.
A.
C.
B.
D.
5-3 Regrouping to Subtract Mixed Numbers
Lesson Quiz for Student Response Systems
4. A Dachshund weighs
pounds. A Dandi
Dinmont Terrier weighs 18 pounds. What is
the difference, in pounds, in their weights?
A.
C.
B.
D.