Question

1. which grade read the fewest pages in november? 1st grade
2. estimate the number of pages read by the school in the month of november.
3. does the graph show that the second graders read 1,000 pages more than the first graders? explain your answer.

41,873 + 520 =
516 + 725 + 480 =
150,000 + 17,980 =

Explanation:

For the addition problems:

Problem 1: \( 41,873 + 520 \)

Step1: Add the ones place: \( 3 + 0 = 3 \)

Step2: Add the tens place: \( 7 + 2 = 9 \)

Step3: Add the hundreds place: \( 8 + 5 = 13 \), carry over 1 to thousands place, write 3 in hundreds place

Step4: Add the thousands place: \( 1 + 1 = 2 \) (the 1 is carried over)

Step5: Add the ten - thousands place: \( 4 + 0 = 4 \)

So, \( 41,873+520 = 42,393 \)

Problem 2: \( 516+725 + 480 \)

Step1: Add \( 516+725 \)

• Ones place: \( 6 + 5=11 \), carry over 1, write 1 in ones place
• Tens place: \( 1+2 + 1=4 \) (the 1 is carried over)
• Hundreds place: \( 5+7 = 12 \), carry over 1, write 2 in hundreds place
• So, \( 516 + 725=1241 \)

Step2: Add \( 1241+480 \)

• Ones place: \( 1+0 = 1 \)
• Tens place: \( 4+8 = 12 \), carry over 1, write 2 in tens place
• Hundreds place: \( 2+4+1 = 7 \) (the 1 is carried over)
• Thousands place: \( 1+0 = 1 \)

So, \( 516 + 725+480=1721 \)

Problem 3: \( 150,000+17,980 \)

Step1: Add the ten - thousands place: \( 50,000+17,980\) (we can also align the numbers by place value)

\(150,000+17,980=(150,000 + 10,000)+(7,980)=160,000+7,980 = 167,980\)
Or by place - value addition:

• Ones place: \( 0+0 = 0 \)
• Tens place: \( 0+8 = 8 \)
• Hundreds place: \( 0+9 = 9 \)
• Thousands place: \( 0+7 = 7 \)
• Ten - thousands place: \( 5+1 = 6 \)
• Hundred - thousands place: \( 1+0 = 1 \)

So, \( 150,000 + 17,980=167,980\)

For the questions about pages read (assuming we had the data, but since it's not provided, we can give a general approach):

Question 22: Which grade read the fewest pages in November?

Answer:

s:

• \(41,873 + 520=\boldsymbol{42,393}\)
• \(516 + 725+480=\boldsymbol{1721}\)
• \(150,000 + 17,980=\boldsymbol{167,980}\)
• Question 22: \(\boldsymbol{1st\ grade}\) (based on the hand - written answer and assumed data)
• Question 24: (Depends on the data, example estimate: \(\boldsymbol{1600}\) pages as in the example)
• Question 26: (Depends on the data, example: If \(P_2 - P_1 = 1000\), answer is yes; else no. For example, if \(P_1 = 2000\), \(P_2 = 3000\), \(\boldsymbol{Yes}\), because \(3000 - 2000 = 1000\))