1) 1800 ÷ 10{(12 - 6) + (24 - 12)}
2) 1/2[{-2(1 + 2)10}15] × 3
3) 20 - [6 - {4 - (8 - 6 + 3)}]
4) According to the BODMAS rule, find out the value of y
36 ÷ 2 + y × 3 - 22 = 8
5) Determine the correct answer for -(1/4 + 7/4) - 2
6) 45 × 3 × 7 × [22/11 + 36/12]
7) Solve this question using the BODMAS rule
2[2 + 2{39 - 2(17 + 2)}]
8) Solve this BODMAS question
(17 × 18) ÷ 10 × 2(2 + 13) - 25
9) Solve this BODMAS question
(3 + 3) × (3 ÷ 3) × (3 × 3)
10) 2550 - [510{270 - (90 - 80 + 70)}]
11) Before a show, there are 8 people in a theater. Five groups of 4 people enter, and then three groups of 2 people leave. Evaluate the expression 8 + 5(4) − 3(2) to fi nd how many people are in the theater.
12) The front door of a house is painted white and blue. Each window is a square with a side length of 7 inches. What is the area of the door that is painted blue?
13) You buy 6 notebooks, 10 folders, 1 pack of pencils, and 1 lunch box for school. After using a $10 gift card, how much do you owe? Explain how you solved the problem.
14) What is the value of the expression 𝟐𝟑 x 𝟑 − 𝟒 + 𝟏?
a) 𝟏𝟓 b) 𝟐𝟓 c) 𝟐𝟏 d) 𝟐𝟒
15) What is the value of the expression
𝟏𝟓𝟎 ∗ 𝟑 − 𝟒 + (𝟐𝟑 ∗ 𝟑 − 𝟖𝟐)𝟐
a) 𝟒𝟕𝟏 b) 𝟓𝟓𝟒 c) 𝟒𝟓𝟗 d) 𝟐𝟒𝟎
1)
= 1800 ÷ 10{(12 - 6) + (24 - 12)} = 1800 ÷ 10{6 + 12} = 1800 ÷ 10 × 18 = 180 × 18 = 3240 |
Inner Brackets ( ) Bracket { } Division Multiplication |
2)
= 1/2[{-2(1 + 2)10}15] × 3 = 1/2[{-2(3)10}15] × 3 = 1/2[-60 × 15] × 3 = 1/2 × -900 × 3 = 0.5 × -900 × 3 = 1350 |
Inner Bracket ( ) Inner Bracket { } Bracket [ ] Division Multiplication |
3)
= 20 - [6 - {4 - (8 - 6 + 3)}] = 20 - [6 - {4 - 5}] = 20 - [6 + 1] = 20 - 7 = 13 |
Inner Bracket ( ) Inner Bracket { } Bracket [ ] Subtraction |
4)
36 ÷ 2 + y × 3 - 22 = 8
18 + y × 3 - 22 = 8
18 + 3y - 22 = 8
3y - 4 = 8
3y = 8 + 4
3y = 12
y = 4
5)
= - (1/4 + 7/4) - 2
= - (8/4) - 2
= - 2 - 2
= - 4
6)
= 45 × 3 × 7 × [22/11 + 36/12] By cross multiplication, = 45 × 3 × 7 × [(264 + 396)/132] = 45 × 3 × 7 × [660/132] = 45 × 3 × 7 × 5 = 4725 |
Bracket, Addition Bracket, Addition Bracket, Division Multiplication |
7)
= 2[2 + 2{39 - 2(17 + 2)}] = 2[2 + 2{39 -2 × 19}] = 2[2 + 2{39 - 38}] = 2[2 + 2 × 1] = 2[2 + 2] = 2 × 4 = 8 |
Inner Bracket ( ) Inner Bracket {}, Multiplication Inner Bracket { }, Subtraction Bracket [ ], Multiplication Bracket [ ], Addition Multiplication |
8)
= (17 × 18) ÷ 10 × 2(2 + 13) - 25 = 306 ÷ 10 × 2 × 15 - 25 = 30.6 × 2 × 15 - 25 = 918 - 25 = 893 |
Brackets ( ) Division Multiplication Subtraction |
9)
= (3 + 3) × (3 ÷ 3) × (3 × 3) = 6 × 1 × 9 = 54 |
Brackets ( ) Multiplication |
10)
= 2550 - [510{270 - (90 - 80 +70)}] = 2550 - [510{270 - 80}] = 2550 - [510 × 190] = 2550 - 96900 = -94350 |
Inner Bracket ( ) Inner Bracket { } Bracket [ ] Subtraction |
11) By evaluating the expression 8 + 5(4) − 3(2), we find the number of people in the theater.
= 8 + 5(4) - 3(2)
= 8 + 20 - 6
= 28 - 6
= 22
So, the number of people in the theater is 22.
12)
Area of the door to be painted blue = 3(Area of square whose side length is 16 inches - area of square whse side lenght is 7 inches)
= 3(162 - 72)
= 3(256 - 49)
= 3 (207)
= 621 square inches
So, the area of the square coloured in blue is 621 square inches.
13)
Number of notebooks = 6 cost $2 each
Number of folders = 10 cost $1 each
Number of pack of pencils = 1 cost of $1 each
Number of lunch box = 1 cost of $8 each
Worth of gift card = $10
Total worth = 6(2) + 10(1) + 1(1) + 1(8)
= 12 + 10 + 1 + 8
= 31
After using gift card, the amount to be owe = 31 - 10
= $21
So, the required amount to be owe is $21.
14) Evaluating the expression,
= 𝟐𝟑 x 𝟑 − 𝟒 + 𝟏
= 8 x 3 - 4 + 1
= 24 - 4 + 1
= 25 - 4
= 21
So, option c is correct.
15) Evaluating the expression,
𝟏𝟓𝟎 ∗ 𝟑 − 𝟒 + (𝟐3 ∗ 𝟑 − 𝟖𝟐)𝟐
= 450 - 4 + (69 - 64)𝟐
= 450 - 4 + 5𝟐
= 450 - 4 + 25
= 475 - 4
= 471
So, option a is correct.
May 21, 24 08:51 PM
May 21, 24 08:51 AM
May 20, 24 10:45 PM