By accessing our 180 Days of Math for Sixth Grade Answers Key Day 129 regularly, students can get better problemsolving skills.
180 Days of Math for Sixth Grade Answers Key Day 129
Directions: Solve each problem.
Question 1.
Double 39.
Answer: 78
Explanation:
Double means the sum the same number.
39 + 39 = 78
Question 2.
Answer: 800
Explanation:
Multiply means to add equal groups.
When we multiply, the number of things in the group increases.
The two factors and the product are parts of a multiplication.
So, 40 × 20 = 800
The numbers 40 and 20 are the factors,
800 is the product.
Question 3.
What is the quotient when 791 is divided by 9?
Answer:
Quotient = 87
Remainder = 8
Explanation:
Question 4.
List the first five multiples of 8.
Answer:
8, 16, 24, 32, 40
Explanation:
Multiples of a number are obtained by multiplying it by natural numbers.
8 x 1 = 8
8 x 2 = 16
8 x 3 = 24
8 x 4 = 32
8 x 5 = 40
Question 5.
Write 2.38 as a mixed number.
Answer:
2\(\frac{19}{50}\)
Explanation:
The number 2.38 can be written using the fraction,
= \(\frac{238}{100}\)
= \(\frac{119}{50}\) when reduced to lowest terms.
It is also equal to 2\(\frac{19}{50}\) when written as a mixed number.
Question 6.
64 ÷ 4 × 2 ÷ 8 = __________
Answer: 4
Explanation:
64 ÷ 4 × 2 ÷ 8
= (64 ÷ 4) × 2 ÷ 8
= 16 x 2 ÷ 8
= 32 ÷ 8
= 4
Question 7.
36 ÷ 6 = 2 ×
Answer: 3
Explanation:
36 ÷ 6 = 2 ×
Let the unknown number be x
36 ÷ 6 = 2x
6 = 2x
x = 3
Question 8.
Distribute.
12(8 – n) = __________
Answer:
96 – 12n
Explanation:
12(8 – n)
n is the variable in the given equation.
Expand the equation as,
(12 x 8 – 12 x n)
= 96 – 12n
Question 9.
What is the volume of a container (in cm^{3}) that holds 350 mL?
Answer:
350 cm^{3}
Explanation:
Capacity is the amount of a container can hold
capacity are litre (L) and millilitre (mL).
1000 mL = 1L, so 1L = 1000 cm3.
350 ml = 350 cm^{3}
Question 10.
Do parallel lines meet at 90°?
Answer:
No, parallel lines meet at 90°
Explanation:
parallel lines never meet at any point,
they extend to distant end.
Question 11.
How many more cookies did Lucas bake than Mindy?
Answer:
24 cookies
Explanation:
1 dozen = 12 cookies.
Lucas bakes 7 x 12 = 84 cookies
Mindy bakes 5 x 12 = 60
Number of more cookies Lucas bakes = 84 – 60 = 24
Question 12.
Compare an octagonal pyramid with an octagonal prism.

Faces  Edges 
Vertices 
Octagonal Pyramid  
Octagonal Prism 
Answer:
Explanation:
Octagonal prism has two octagons are the bases of prism.
Eight rectangles are the lateral faces.
An octagonal pyramid is a pyramid with a base that’s a polygon with eight sides,
and triangular faces, or sides, that meet at a point directly above the bottom.