How do you multiply 123? Algebra Expressions, Equations, and Functions PEMDAS 1 Answer anor277 Sep 15, 2016 Well it's simply 12×2×2 = 18 Explanation: And thus 120=11=1, And 121=12, 122=14 And, 123=18. Capisce? Answer link Related questions What is PEMDAS? How do you use PEMDAS? How do you use order of operations to simplify 3(7−2)−8? What are common mistakes students make with PEMDAS? How do you evaluate the expression 5[8+(3−1)]−2? How do you simplify the expression 4(30−(3+1)2)? How do you evaluate the expression x4+x if x=2? Is it okay to add first before subtracting in 4−6+3? How do you simplify (−3)2+12⋅5? How do you simplify (4−2)3−4⋅8+21÷3? See all questions in PEMDAS Impact of this question 1490 views around the world You can reuse this answer Creative Commons License