Solve math problems with Microsoft Math Solver, which supports basic math, pre-algebra, algebra, trigonometry, calculus and more., How many significant figures does the result of 143 + 305 × 70 have? 143 + 305 × 70 calculated with significant figures is 20000, which has 1 sig figs. There are 3 steps to calculate 143 + 305 × 70 with sig figs. To use the calculator, enter your mathematical expression and press Calculate., Draw, Scan, Solve, and Learn! Solve long equations, draw in landscape! See how to solve problems and show your work—plus get definitions for mathematical concepts. Instantly graph any equation to visualize your function and understand the relationship between variables., Simple online calculator with memory functions similar to a basic handheld calculator. Free simple calculator for adding, subtracting, multiplying, dividing., Detailed step by step solution for simplify 143+305*70microsoft Solutions Integral Calculator Derivative Calculator Algebra Calculator Matrix Calculator More, Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more..