Powers of ten and order of operations
Use mental math to multiply and divide decimal numbers by powers of ten, including negative exponents, and apply the order of operations to expressions containing them. Unlimited questions, five difficulty levels, and a full worked solution every time — free.
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Evaluate using mental math.
4.87 / 101
Answer: 0.487
See one solved, step by step
Evaluate using mental math.
4.21 / 10-3
📘 Worked solution
110-3 = 1/(103)A negative exponent means the power of ten is a fraction less than 1.
24.21 / 10-3 -> move the decimal 3 places to the right.Dividing by a number smaller than 1 makes the result bigger, so the decimal moves right.
3= 4210Fill in a zero if you run out of digits.
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