10. Subtract 4 from 10 then multiply by the quotient of 24 and 3. 10-4(24/3)
11. Kim, Rio and Jason got different answers for this problem: 40-2×[(8×3+6)+12÷2]
Kim's answer was 26, Rio's answer was 20 and Jason's answer was 18.
a. Who got the correct answer? Rio's answer was Correct.
b. Show and explain how the other two students got the wrong answers.
40-2× [(8×3+6)+12÷2]
→ 40-2× [(24÷6)+6]
→ 40-2× [4+6]
→ 40-2× 10
→ 40-20
= 20
12. Klein had P 42,500 in his bank account. Over the summer period, he made 3 withdrawals of P 8,500 each and a deposit of P 13,250. Write an order of operations to represent this situation then solve.
Answers & Comments
9. Multiply the sum of 4 and 10 by 7. (4+7)×7
10. Subtract 4 from 10 then multiply by the quotient of 24 and 3. 10-4(24/3)
11. Kim, Rio and Jason got different answers for this problem: 40-2×[(8×3+6)+12÷2]
Kim's answer was 26, Rio's answer was 20 and Jason's answer was 18.
a. Who got the correct answer? Rio's answer was Correct.
b. Show and explain how the other two students got the wrong answers.
40-2× [(8×3+6)+12÷2]
→ 40-2× [(24÷6)+6]
→ 40-2× [4+6]
→ 40-2× 10
→ 40-20
= 20
12. Klein had P 42,500 in his bank account. Over the summer period, he made 3 withdrawals of P 8,500 each and a deposit of P 13,250. Write an order of operations to represent this situation then solve.
1. Klein have 42500.00
2. He makes three withdrawals 8500.00 each.
3. He deposits 13250.00
4. (4+10)×7 = 98