Practice the questions of McGraw Hill Math Grade 8 Answer Key PDF Lesson 1.1 Adding and Subtracting Whole Numbers to secure good marks & knowledge in the exams.
McGraw-Hill Math Grade 8 Answer Key Lesson 1.1 Adding and Subtracting Whole Numbers
Exercises Add
Question 1.
Answer:
292
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 2.
Answer:
1320
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 3.
Answer:
726
Explanation:
Line up all the addends according to their place values.
Then the sum of the addends are as shown below,
Question 4.
Answer:
1273
Explanation:
Line up all the addends according to their place values.
Then the sum of the addends is 1273 as shown.
Question 5.
Answer:
1406
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 6.
Answer:
603
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 7.
Answer:
675
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 8.
Answer:
11001
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 9.
Answer:
11007
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 10.
Answer:
1092
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 11.
Answer:
1182976
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 12.
Answer:
507382
Explanation:
Line up all the addends according to their place values.
If the sum of the place value has 2 digits,
then write the second digit and carry the first digit to the next column.
Question 13.
Beatrice works the weekend shift at the local nature park. 325 people visited the park on Saturday morning. During the afternoon, another 455 people visited the nature park. That evening, another 175 people attended. How many people, in total, visited the park on Saturday?
Answer:
955
Explanation:
325 people visited the park on Saturday morning.
During the afternoon, another 455 people visited the nature park.
That evening, another 175 people attended.
Total people visited the park on Saturday,
Question 14.
Trevor is calculating the batting statistics for his baseball team. They hit 145 home runs, 117 triples, 612
doubles, and 543 singles. Using these statistics, how many times did Trevor’s team hit the ball?
Answer:
1417
Explanation:
Baseball hit 145 home runs, 117 triples, 612 doubles, and 543 singles.
Total number of times Trevor’s team hit the ball,
Exercises Subtract
Question 1.
Answer:
919
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 2.
Answer:
893
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 3.
Answer:
7084
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 4.
Answer:
1589
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 5.
Answer:
1038
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 6.
Answer:
560
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 7.
Answer:
1188
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 8.
Answer:
657889
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 9.
Answer:
3062
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 10.
Answer:
194566
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 11.
Answer:
276292
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 12.
Answer:
141685
Explanation:
Arrange the given numbers according to their place value,
starting from ones, tens and so on..
Then subtract the bigger number from the smaller,
If required borrow one from the next column to find the difference.
Question 13.
The U.S. Forest Service estimated that lašt year Williams Canyon was home to 325,000 deciduous trees. This season an insect infestation killed 125,889 trees. How many trees are flow left standing?
Answer:
199111
Explanation:
Last year Williams Canyon home has 325,000 deciduous trees.
This season an insect infestation killed 125,889 trees.
Total number of trees are flow left standing,
Question 14.
During a recent hurricane, 1,385 of Oak Island’s 3,034 inhabitants evacuated the island by ferry. How many of the inhabitants stayed behind during the storm?
Answer:
1649
Explanation:
During a recent hurricane, 1,385 of Oak Island’s and
3,034 inhabitants evacuated the island by ferry.
Total number of the inhabitants stayed behind during the storm,
