Decimal Addition and Subtraction — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Grade 4: Jake spent $3.45, $1.20, and $0.75. The total is $5.40.
$3.45 + $1.20 + $0.75 = $5.40.
2. Grade 4: To add multiple money amounts, first line up the decimal points.
Aligning decimals keeps cents with cents.
3. Grade 4: The sum of $3.45 and $1.20 equals $4.65 before adding the third amount.
Step-by-step totals build to the final sum.
4. Grade 4: Adding $4.65 + $0.75 gives the final total of $5.40.
5 + 5 = 10 hundredths, regroup to 1 tenth.
5. Grade 4: Maria bought items for $2.30, $1.85, and $0.50, totaling $4.65.
Sum of all three equals four dollars and sixty-five cents.
6. Grade 4: When adding money in Grade 4, each amount must show two decimal places.
Money is written to the hundredth place.
7. Grade 4: The total of $5.20, $3.40, and $1.10 is $9.70.
Stacking amounts gives nine dollars seventy cents.
8. Grade 4: Subtracting $5.40 from $10.00 leaves change of $4.60.
Annex zeros and regroup to find change.
9. Grade 4: Three items cost $1.25, $2.50, and $0.75, totaling $4.50.
Sum of all three is four dollars fifty cents.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
$3.45 + $1.20
→ $4.65
$4.65
$4.65 + $0.75
→ $5.40
$5.40
$5.20 + $3.40 + $1.10
→ $9.70
$9.70
$10.00 - $5.40
→ $4.60
$4.60
Each pair represents a step in money calculation.