180 Days of Math for Fourth Grade Day 79 Answers Key

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180 Days of Math for Fourth Grade Answers Key Day 79

Directions Solve each problem.

Question 1.

Answer:

Explanation:
Ones Place Value
5 + 5 = 10
Put the 0 in Ones place
Carry the 1 to Tens place
Tens Place Value
1 + 3 + 2 = 6
Put the 6 in Tens place

Question 2.
Write \(\frac{6}{10}\) as a decimal.
______________
Answer:
6/10 as a decimal is 0.6
Explanation:
A decimal is a fraction written in a special form.
Instead of writing 1/2, for example,
you can express the fraction as the decimal 0.5,
where the zero is in the ones place and the five is in the tenths place.

Question 3.

Answer:

Explanation:
We have the equation:
75 ÷ 10 = 7
Calculated to 0 decimal places.
quotient is 7 and the remainder is 5

Question 4.
What is the quotient of 80 and 10?
______________
Answer:

Explanation:
We have the equation:
80 ÷ 10 = 8
Calculated to 0 decimal places
quotient is 8 and the remainder is 0

Question 5.
What is the value of the tens place in 1,378?
______________
Answer:
the value of the tens place in 1,378 is 7
Explanation:
thousands place is 1
Hundreds place is 3
ones place is 8

Question 6.
7 × = 21
Answer:
21 ÷ 7 = 3
Explanation:
7 x 3 = 21
to know the unknown value in multiplication
we have to find the division.

Question 7.
Each cube has 2-cm sides. What is the volume of the model?
______________
Answer:
2 cm³
Explanation:
Volume can be measured in several units.
Some of the more common ones are:
cm³ or cubic centimeters
milliliters
liters
1 cm³ = the volume of a cube of 1-cm sides
2cm = 2 cm³

Question 8.
You wake up at 6:28 A.M. and go to bed at 9:30 P.M. How long are you awake?
______________
Answer:
15:02 minutes
Explanation:
06:28 to 9:28 = 3 hours in the  morning
9 : 28 to 9:30 = 12 hours 2 minutes
12 + 3 = 15 hours 2 minutes
The formula for calculating elapsed time is elapsed time = end time – start time.
Subtract the minutes and hours separately.

Question 9.
If you turn around a given point, are you reflecting, translating, or rotating?
______________
Answer:
rotating
Explanation:
Rotation is a transformation that rotates a figure about a fixed point known as the centre of rotation.
In rotation, there is a central point that remains fixed, and everything else rotates around that point.

Question 10.
Three sisters are each making themselves one beaded necklace. They use 125 beads on each necklace. How many beads do they need?
______________
Answer:
125 x  3 = 375
Explanation:
Three sisters are each making themselves one beaded necklace.
They use 125 beads on each necklace.
125 x 3 = 375
They need 375 beeds