Students can use the Spectrum Math Grade 3 Answer Key Chapter 3 Pretest as a quick guide to resolve any of their doubts.
Spectrum Math Grade 3 Chapter 3 Pretest Answers Key
Check What You Know
Adding and Subtracting to 4-Digit Numbers (with renaming)
Add or subtract.
Question 1.
a.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 13 + 7 + 19 = (13 + 7) + 19 = 20 + 19 = 39.
b.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 23 + 42 + 97 = (23 + 42) + 97 = 65 + 97 = 162.
c.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 22 + 24 + 16 = (22 + 24) + 16 = 46 + 16 = 62.
d.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 8 + 9 + 5 = (8 + 9) + 5 = 17 + 5 = 23.
e.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 21 + 47 + 58 = (21 + 47) + 58 = 68 + 58 = 126.
Question 2.
a.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 123 + 415 + 423 = (123 + 415) + 423 = 538 + 423 = 961.
b.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 190 + 180 + 360 = (190 + 180) + 360 = 370 + 360 = 730.
c.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 420 + 567 + 321 = (420 + 567) + 321 = 987 + 321 = 1308.
d.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 519 + 612 + 313 = (519 + 612) + 313 = 1131 + 313 = 1444.
e.
Answer:
Explanation:
In the addition of 3 numbers in a column form first we need to find the sum of first two numbers and add it to the third number, 423 + 521 + 747 = (423 + 521) + 747 = 944 + 747 = 1691.
Question 3.
a.
Answer:
Explanation:
There are two 4-digit numbers given, first add numbers in the ones place, then tens, then hundreds and lastly add numbers in the thousands place, 1436+5120 = 6556.
b.
Answer:
Explanation:
There are two 4-digit numbers given, first add numbers in the ones place, then tens, then hundreds and lastly add numbers in the thousands place, 5190+4125 = 9315.
c.
Answer:
Explanation:
There are two 4-digit numbers given, first add numbers in the ones place, then tens, then hundreds and lastly add numbers in the thousands place, 5032+1764 = 6796.
d.
Answer:
Explanation:
There are two 4-digit numbers given, first add numbers in the ones place, then tens, then hundreds and lastly add numbers in the thousands place, 4321+2841 = 7162.
e.
Answer:
Explanation:
There are two 4-digit numbers given, first add numbers in the ones place, then tens, then hundreds and lastly add numbers in the thousands place, 5960+4011 = 9971.
Question 4.
a.
Answer:
Explanation:
Subtract the ones.
Rename 3 hundreds and 4 tens as “2 hundreds and 14 tens.” Subtract the tens.
Rename 1 thousands and 2 hundreds as “0 thousands and 12 hundreds.” Subtract the hundreds.
b.
Answer:
Explanation:
Subtract the ones.
Subtract the tens.
Subtract the hundreds.
As there is no thousands place digit in the second number consider it to be zero and then subtract the thousands.
c.
Answer:
Explanation:
Subtract the ones.
Rename 7 hundreds and 2 tens as “6 hundreds and 12 tens.” Subtract the tens.
Subtract the hundreds.
d.
Answer:
Explanation:
Subtract the ones.
Rename 1 hundreds and 2 tens as “0 hundreds and 12 tens.” Subtract the tens.
Rename 5 thousands and 0 hundreds as “4 thousands and 10 hundreds.” Subtract the hundreds.
Subtract the thousands.
e.
Answer:
Explanation:
Subtract the ones.
Rename 9 hundreds and 6 tens as “8 hundreds and 16 tens.” Subtract the tens.
Subtract the hundreds.
Subtract the thousands.
Question 5.
a.
Answer:
Explanation:
Subtract the ones.
Rename 9 hundreds and 4 tens as “8 hundreds and 14 tens.” Subtract the tens.
Subtract the hundreds.
Subtract the thousands.
b.
Answer:
Explanation:
Subtract the ones.
Rename 8 hundreds and 0 tens as “7 hundreds and 10 tens.” Subtract the tens.
Rename 5 thousands and 7 hundreds as “4 thousands and 17 hundreds.” Subtract the hundreds.
Subtract the thousands.
c.
Answer:
Explanation:
Subtract the ones.
Rename 9 hundreds and 0 tens as “8 hundreds and 10 tens.” Subtract the tens.
Subtract the hundreds.
Subtract the thousands.
d.
Answer:
Explanation:
Rename 7 tens and 6 ones as “6 tens and 16 ones.” Subtract the ones.
Subtract the tens.
Subtract the hundreds.
As there is no thousands place digit in the second number consider it to be zero and then subtract the thousands.
e.
Answer:
Explanation:
Subtract the ones.
Rename 1 hundreds and 2 tens as “0 hundreds and 12 tens.” Subtract the tens.
Rename 4 thousands and 0 hundreds as “3 thousands and 10 hundreds.” Subtract the hundreds.
Subtract the thousands.
Question 6.
a.
Answer:
Explanation:
Subtract the ones.
Subtract the tens.
Rename 9 thousands and 6 hundreds as “8 thousands and 16 hundreds.” Subtract the hundreds.
Subtract the thousands.
b.
Answer:
Explanation:
Subtract the ones.
Rename 3 hundreds and 1 tens as “2 hundreds and 11 tens.” Subtract the tens.
As there is no hundreds place digit in the second number consider it to be zero and then subtract the hundreds.
c.
Answer:
Explanation:
Subtract the ones.
Rename 4 hundreds and 2 tens as “3 hundreds and 12 tens.” Subtract the tens.
As there is no hundreds place digit in the second number consider it to be zero and then subtract the hundreds.
d.
Answer:
Explanation:
Subtract the ones.
Subtract the tens.
Subtract the hundreds.
Subtract the thousands.
e.
Answer:
Explanation:
Subtract the ones.
Rename 5 hundreds and 0 tens as “4 hundreds and 10 tens.” Subtract the tens.
Rename 4 thousands and 4 hundreds as “3 thousands and 14 hundreds.” Subtract the hundreds.
Subtract the thousands.
Solve each problem.
Question 8.
Gerod has 5 birds, 3 turtles, 2 hamsters, and 1 dog. How many pets does he have?
Gerod has ____ pets.
Answer:
Gerod has 11 pets,
Explanation:
Number of birds Gerod has = 5, Number of turtles Gerod has = 3, Number of hamsters Gerod has = 2, Number of dogs Gerod has = 1, Total number of pets Gerod has = Number of birds Gerod has + Number of turtles Gerod has + Number of hamsters Gerod has + Number of dogs Gerod has = 5 + 3 + 2 + 1 = 11 pets.
Question 9.
Oleta has 19 dimes, 27 quarters, 153 pennies, and 6 nickels. How many coins does she have?
Oleta has __________ coins.
Answer:
Oleta has 205 coins,
Explanation:
Number of dimes Oleta has = 19, Number of quarters Oleta has = 27, Number of pennies Oleta has = 153, Number of nickels Oleta has = 6, Total number of coins Oleta has = Number of dimes Oleta has + Number of quarters Oleta has + Number of pennies Oleta has + Number of nickels Oleta has = 19 + 27 + 153 + 6 = 205 coins.
Question 10.
In the year 1998, an antique vase was 239 years old. In what year was the vase made?
The vase was made in the year ____.
Answer:
The vase was made in the year 1759,
Explanation:
The age of the antique vase in 1998 was = 239 years, The year when the vase was made = 1998 – 239 = 1759.
Question 11.
During his walk each day, Paul counted his steps. In 4 days, he walked ‘120, 980, 642, and 760 steps. How many steps did he walk?
Paul walked _________ steps in ‘4 days.
Answer:
Paul walked 2,502 steps in 4 days,
Explanation:
Number of steps Paul walked on first day = 120, Number of steps Paul walked on second day = 980, Number of steps Paul walked on third day = 642, Number of steps Paul walked on fourth day = 760, Total number of steps Paul walked = Number of steps Paul walked on first day + Number of steps Paul walked on second day + Number of steps Paul walked on third day + Number of steps Paul walked on fourth day = 120 + 980 + 642 + 760 = 2502 steps.
Question 12.
James received 100 dollars for his birthday. He spent 63 dollars of it on Iwo computer games. Estimate how much money he has left.
James has about __________ dollars left.
Answer:
James has about 40 dollars left,
Explanation:
Actual number of dollars received by James for his birthday = 100, Estimated number of dollars received by James for his birthday = 100, Actual number of dollars he spent on two computer games = 63, Estimated number of dollars he spent on two computer games = 60, Estimated number of dollars left with James = Estimated number of dollars received by James for his birthday – Estimated number of dollars he spent on two computer games = 100 – 60 = 40.
Question 13.
At a basketball game, one team scored 36 points. The other team scored 27 points. Estimate the total points scored in the game.
There were a total of about ____ points scored in the basketball game.
Answer:
Total of about 70 points were scored in the basketball game,
Explanation:
Actual score of one team at a basketball game = 36 points, Estimated score of one team at a basketball game = 40 points, Actual score of other team at a basketball game = 27 points, Estimated score of other team at a basketball game = 30 points, Estimated total number of points scored in the basket ball game = Estimated score of one team at a basketball game + Estimated score of other team at a basketball game = 40 + 30 = 70 points.