Decimal Addition and Subtraction — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Grade 4: Sara bought items for $3.25 and $4.60. From a $10 bill, what change should she receive?
A) $2.15
B) $1.15
C) $2.25
D) $3.15
$3.25 + $4.60 = $7.85, and $10.00 - $7.85 = $2.15.
2. Grade 4: A recipe needs 1.25 cups flour and 0.75 cups sugar. How much total dry ingredient?
A) 1.5 cups
B) 2.0 cups
C) 1.75 cups
D) 2.25 cups
1.25 + 0.75 = 2.00 cups.
3. Grade 4: Tom paid $20 for items costing $7.45 and $5.30. What is his change?
A) $6.25
B) $7.25
C) $8.25
D) $7.15
$7.45 + $5.30 = $12.75, and $20.00 - $12.75 = $7.25.
4. Grade 4: A recipe calls for 2.4 oz of butter, but you double it. How much butter is needed?
A) 4.6 oz
B) 4.8 oz
C) 5.2 oz
D) 4.4 oz
Doubling 2.4 gives 4.8 ounces.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Grade 4: $3.25 + $4.60 totals $7.85 before computing change.
Seven dollars eighty-five cents is the subtotal.
2. Grade 4: From $10.00 minus $7.85, the change is $2.15.
Ten minus seven dollars eighty-five cents equals 2.15.
3. Grade 4: A recipe with 1.25 cups flour and 0.75 cups sugar uses 2 cups dry ingredient.
1.25 + 0.75 = 2.00 cups exactly.
4. Grade 4: Doubling 2.4 ounces of butter requires 4.8 ounces total.
Two times 2.4 equals 4.8 ounces.
5. Grade 4: From $20.00, after paying $12.75, the change is $7.25.
Twenty minus twelve seventy-five equals 7.25.