# 180 Days of Math for Sixth Grade Day 90 Answers Key

By accessing our 180 Days of Math for Sixth Grade Answers Key Day 90 regularly, students can get better problem-solving skills.

## 180 Days of Math for Sixth Grade Answers Key Day 90

Directions: Solve each problem.

Question 1.
50 – (-8) = _________
50 + 8 = 58

Question 2.

Question 3.
629 ÷ 6 = __________
Answer: 629 ÷ 6 = 104.8

Question 4.
How many digits are in 165?

Question 5.
$$\frac{3}{8}$$ + $$\frac{5}{8}$$ = ___________
$$\frac{3}{8}$$ + $$\frac{5}{8}$$
The denominators of both the fractions are same so add the numerators.
$$\frac{3}{8}$$ + $$\frac{5}{8}$$ = $$\frac{3+5}{8}$$ = $$\frac{8}{8}$$ = 1

Question 6.
Write the next number in the sequence. 45, 54, 63, 72,
Answer: 45, 54, 63, 72, 81.

Question 7.
2.9 + 5.8 = 13.2 –
Let the unknown value be x
2.9 + 5.8 = 13.2 – x
x + 8.7 = 13.2
x = 13.2 – 8.7
x = 4.5

Question 8.
Find x.
22 – x = 15
x = ___________
22 – x = 15
22 – 15 = x
x = 7

Question 9.
Calculate the perimeter of the shape.

Given,
l = 3 m
b = 6 m
We know that,
Perimeter of the rectangle = 2(L + B)
P = 2 (6 + 3)
P = 2 × 9
P = 18 meters

Question 10.
Is 106° less than or greater than a right angle?
Answer: 106° is greater than a right angle

Question 11.
A box of a dozen donuts contains 5 chocolate donuts, 4 sprinkled donuts, 2 lemon donuts, and 1 raspberry-filled donut. What is the probability that you will reach in and not grab a sprinkled donut?
Given,
A box of a dozen donuts contains 5 chocolate donuts, 4 sprinkled donuts, 2 lemon donuts, and 1 raspberry-filled donut.
5 + 4 + 2 + 1 = 12
The probability that you will reach in and not grab a sprinkled donut is 1/12.

Question 12.
A palindrome is a number that is the same backwards and forwards, for example 242. The addition problems below are also palindromes. Complete the chart with palindromes.

 Addition Palindrome 423 + 324 747 929 314 + 413 383