HOTS Mathematics Primary 5 Whole Numbers

Nadia calculates the total cost of buying party ingredients using the expression: (3 × $12 + $5) × 4 − (2 × $8 − $3). What is the total cost?

A $151
B $145
C $32
D $177
Show Worked Solution

Worked Solution

Step 1: Evaluate the first bracket. 3 × $12 = $36 $36 + $5 = $41 Step 2: Multiply by 4. $41 × 4 = $164 Step 3: Evaluate the second bracket. 2 × $8 = $16 $16 − $3 = $13 Step 4: Subtract. $164 − $13 = $151

Correct answer: $151

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