A bricklayer lays 649 bricks the first day, 632 bricks the second day, and 478 the third day. The bricklayer laid _____bricks in three days.
a. 1,759
b. 1,760
c. 1,769
d. 1,770
The correct answer and explanation is:
The correct answer is 1,759.
To find the total number of bricks laid in three days, simply add the number of bricks laid each day. The bricklayer laid:
- 649 bricks on the first day
- 632 bricks on the second day
- 478 bricks on the third day
Now, sum these values: 649+632+478=1,759649 + 632 + 478 = 1,759
So, the bricklayer laid 1,759 bricks in total over the three days. Adding the bricks from each day is a straightforward process and is called simple addition. Each value represents the total number of bricks laid on each day, and by adding them together, we obtain the total number of bricks laid over the three days.
It is important to keep in mind that when performing addition, ensuring the correct alignment of numbers (in columns) helps avoid mistakes, especially when dealing with larger numbers. In this case, the total number of bricks laid by the bricklayer in the three days is exactly 1,759, making option a the correct choice.