Grade 8 Math: Order of operations · Mixed operations

1. 1.A) 720Multiply both pairs first: 15 × 18 = 270 and 25 × 18 = 450, then add.
2. 2.B) 21Multiply first: 3 × 5 = 15, then add 6.
3. 3.D) 153Multiply both pairs first: 4 × 15 = 60 and 31 × 3 = 93, then add.
4. 4.D) 614Multiply both pairs first: 11 × 19 = 209 and 27 × 15 = 405, then add.
5. 5.B) 53Multiply first: 7 × 13 = 91, then subtract 38.
6. 6.A) 35Multiply first: 4 × 17 = 68, then subtract 33.
7. 7.A) 122Multiply first: 20 × 5 = 100, then add 22.
8. 8.C) 26Multiply first: 5 × 7 = 35, then subtract 9.
9. 9.D) 438Multiply both pairs first: 19 × 18 = 342 and 16 × 6 = 96, then add.
10. 10.A) 92Multiply first: 8 × 7 = 56, then add 36.

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