Order of operations review + Fractions

Order of operations review + continuation of fractions

P5

Poll

Are we ready???

Calculators away. Prepare some writing materials

• yes

• no

Multiple Choice

Which of the following statements is true for the following?

100 - 26 + 15

= 100 - 41

= 59

• There is nothing wrong with the following

• 26 should have been subtracted and not 41

• we must add in our own brackets

• there is a missing step

Multiple Choice

12 + 16 - 8 + 3

= 28 - 8

=20 + 3

= 23

Is the above working right or wrong???

• Yes

• No

Multiple Choice

What of the following statements is true for the following?

80 x 40  $\div$  10  $\div$  2

=  3200  $\div$  10 

= 320  $\div$  2
= 160

• The answer of 160 is wrong

• in line 2, the divide by 2 is missing

• the order of doing the question is wrong

• nothing is wrong

Fill in the Blanks

130 - 14+15 =

Fill in the Blanks

300 x 4 - 71 + 34 =

Fill in the Blanks

240 - (23+7) =

Multiple Select

Select all the statements that are true.

400 - 3 x 4 + 10 =

• 397 + 40

• the multiplication should be done first

• we can approach the question from left to right starting with 400 - 3

• The answer is 398

• The answer is 1598

Fill in the Blanks

(8 + 40) ÷ 2 – 15 =

Fill in the Blanks

8 + 40 ÷ 2 – 15 =

Multiple Choice

What would be my first step? 3 + 4 x 6 - 4 =

• Addition

• Multiplication

• Subtraction

• Division

Multiple Choice

Are these two expressions equal?

(6 - 4) -1 and 6 - (4 - 1)

• Yes, they both equal 1

• Yes, they both equal 3

• No, they are not equal

Multiple Choice

Which operation would you do first in the following equation?

10 - 4 ÷ 1 x 5

• Subtraction

• Division

• Multiplication

• Addition

Fill in the Blanks

15 + 7 × 2 – 11 + 35=

Fill in the Blanks

20 x 2 - (10 - 4)

Fill in the Blanks

20 x 2 - 10 - 4

Fill in the Blanks

Solve:

38 + (9 x 6) ÷ 3

Fractions

converting improper fractions to mixed numbers

What is an improper fraction?

Let's try converting some improper fractions to mixed numbers...

•  $\frac{23}{4}$  = 

•  $\frac{102}{3}$  = 

•  $\frac{65}{11}$  = 

Let's try converting some mixed numbers to improper fractions...

•  $2\frac{2}{5}=\$  = 

•  $10\frac{7}{30}$  = 

•  $6\frac{5}{7}$  = 

Multiple Choice

What improper fraction is shown by the picture?

• $3\ \frac{1}{4}$
  

• $\frac{4}{13}$
  

• $\frac{9}{4}$
  

• $\frac{13}{4}$

Multiple Choice

In an improper fraction, which term is larger?

• Numerator

• Denominator

• Depends

• They are equal

Multiple Choice

• $\frac{12}{5}$

• $\frac{4}{5}$
  

• $\frac{1}{5}$

• $\frac{20}{5}$
  

Multiple Choice

Which of the following is the same as  $\frac{17}{5}$  

•  $\frac{5}{5}+\frac{5}{5}+\frac{5}{5}+\frac{3}{5}$  

•  $\frac{5}{5}+\frac{2}{5}$  

•  $\frac{5}{5}+\frac{5}{5}+\frac{5}{5}+\frac{2}{5}$  

•  $\frac{5}{5}+\frac{5}{5}+\frac{2}{5}$  

Multiple Choice

Change to an improper fraction.

• $\frac{1}{15}$
  

• $\frac{15}{15}$

• $\frac{16}{15}$
  

• $\frac{2}{15}$
  

Multiple Choice

Which mixed number does the model represent?

• $\frac{3}{8}$
  

• 
  

  $1\ \frac{3}{8}$

• $\frac{11}{8}$

• $1\ \frac{5}{8}$
  

Multiple Choice

Convert the mixed number into an improper fraction

• 
  

  $\frac{21}{4}$

• $\frac{10}{4}$
  

• $\frac{4}{9}$

• $\frac{9}{4}$
  

Multiple Choice

10 apples are shared equally among 3 children. Which of the following statement is true?

• Each child can get 4 apples

• Each child can get half an apple only

• Each child can have

  $3\ \frac{1}{3}$ apples

• Each child can get $2\frac{1}{2}$ apples

Multiple Choice

5 pizzas are shared equally among 15 children. Which of the following statement is true?

• Each child can get 3 pizzas

• Each child can get  $\frac{1}{5}$  of a pizza

• Each child can get  $\frac{1}{3}$  of a pizza

• Each child can  $\frac{1}{15}$  of  a pizza