Problem Overview:
The task involves solving a series of 3-digit subtraction problems without regrouping. Each subtraction problem is associated with a letter, and the results will help solve a riddle at the bottom: "What did the duck say after he went shopping?"
Step-by-Step Solution:
#### 1. Solve Each Subtraction Problem:
We will solve each subtraction problem step by step.
---
Row 1:
-
m: \( 486 - 344 \)
- Subtract digit by digit: \( 6 - 4 = 2 \), \( 8 - 4 = 4 \), \( 4 - 3 = 1 \)
- Result: \( 142 \)
-
$: 789 - 175 \)
- Subtract digit by digit: \( 9 - 5 = 4 \), \( 8 - 7 = 1 \), \( 7 - 1 = 6 \)
- Result: \( 614 \)
-
p: \( 889 - 468 \)
- Subtract digit by digit: \( 9 - 8 = 1 \), \( 8 - 6 = 2 \), \( 8 - 4 = 4 \)
- Result: \( 421 \)
-
u: \( 497 - 182 \)
- Subtract digit by digit: \( 7 - 2 = 5 \), \( 9 - 8 = 1 \), \( 4 - 1 = 3 \)
- Result: \( 315 \)
---
Row 2:
-
$: 857 - 547 \)
- Subtract digit by digit: \( 7 - 7 = 0 \), \( 5 - 4 = 1 \), \( 8 - 5 = 3 \)
- Result: \( 310 \)
-
o: \( 744 - 344 \)
- Subtract digit by digit: \( 4 - 4 = 0 \), \( 4 - 4 = 0 \), \( 7 - 3 = 4 \)
- Result: \( 400 \)
-
i: \( 975 - 565 \)
- Subtract digit by digit: \( 5 - 5 = 0 \), \( 7 - 6 = 1 \), \( 9 - 5 = 4 \)
- Result: \( 410 \)
-
l: \( 896 - 344 \)
- Subtract digit by digit: \( 6 - 4 = 2 \), \( 9 - 4 = 5 \), \( 8 - 3 = 5 \)
- Result: \( 552 \)
---
Row 3:
-
t: \( 736 - 425 \)
- Subtract digit by digit: \( 6 - 5 = 1 \), \( 3 - 2 = 1 \), \( 7 - 4 = 3 \)
- Result: \( 311 \)
-
y: \( 983 - 152 \)
- Subtract digit by digit: \( 3 - 2 = 1 \), \( 8 - 5 = 3 \), \( 9 - 1 = 8 \)
- Result: \( 831 \)
-
n: \( 839 - 223 \)
- Subtract digit by digit: \( 9 - 3 = 6 \), \( 3 - 2 = 1 \), \( 8 - 2 = 6 \)
- Result: \( 616 \)
-
b: \( 689 - 326 \)
- Subtract digit by digit: \( 9 - 6 = 3 \), \( 8 - 2 = 6 \), \( 6 - 3 = 3 \)
- Result: \( 363 \)
---
Row 4:
-
$: 755 - 240 \)
- Subtract digit by digit: \( 5 - 0 = 5 \), \( 5 - 4 = 1 \), \( 7 - 2 = 5 \)
- Result: \( 515 \)
-
i: \( 489 - 388 \)
- Subtract digit by digit: \( 9 - 8 = 1 \), \( 8 - 8 = 0 \), \( 4 - 3 = 1 \)
- Result: \( 101 \)
-
$: 486 - 133 \)
- Subtract digit by digit: \( 6 - 3 = 3 \), \( 8 - 3 = 5 \), \( 4 - 1 = 3 \)
- Result: \( 353 \)
-
b: \( 677 - 141 \)
- Subtract digit by digit: \( 7 - 1 = 6 \), \( 7 - 4 = 3 \), \( 6 - 1 = 5 \)
- Result: \( 536 \)
---
#### 2. Match Results to Letters:
Now, we match the results to the corresponding letters:
-
m: \( 142 \)
-
$: 614 \)
-
p: \( 421 \)
-
u: \( 315 \)
-
$: 310 \)
-
o: \( 400 \)
-
i: \( 410 \)
-
l: \( 552 \)
-
t: \( 311 \)
-
y: \( 831 \)
-
n: \( 616 \)
-
b: \( 363 \)
-
$: 515 \)
-
i: \( 101 \)
-
$: 353 \)
-
b: \( 536 \)
---
#### 3. Solve the Riddle:
The riddle asks, "What did the duck say after he went shopping?" The numbers provided at the bottom are clues to the answer:
-
421: Corresponds to
p
-
315: Corresponds to
u
-
311: Corresponds to
t
-
400: Corresponds to
o
-
363: Corresponds to
b
-
616: Corresponds to
n
-
536: Corresponds to
b
Putting these letters together:
put on bib
---
Final Answer:
\[
\boxed{\text{Put on bib}}
\]
Parent Tip: Review the logic above to help your child master the concept of subtraction worksheet second grade regrouping.
