calculate

1. (transitive, mathematics) To determine the value of something or the solution to something by a mathematical process.Examples: "Calculate the square root of 3 to 10 decimal places."transitive

2. (intransitive, mathematics) To determine values or solutions by a mathematical process; reckon.Synonyms: compute, reckonintransitive

3. (intransitive, US, dialect) To plan; to expect; to think.Examples: "I stumbled along through the young pines and huckleberry bushes. Pretty soon I struck into a sort of path that, I cal’lated, might lead to the road I was hunting for. It twisted and turned, and, the first thing I knew, made a sudden bend around a bunch of bayberry scrub and opened out into a big clear space like a lawn."USdialectalintransitive

4. (chess) To imagine sequences of potential moves and responses without actually moving the pieces.