Khan Academy offers video tutorials and guided exercises for many types of word problems appropriate to students in grades 3-12. The problems involve skills in basic number operations, fractions, ratios, age, multi-step, averages, rational numbers, coordinate planes, absolute value, money and decimals. If you get stuck while working a guided exercise word problem, you can request a hint. Up to 3 are available for each problem, as well as videos of similar problems.
If you register for free, you can see what skills you’ve mastered and keep track of what problem-solving skills come next.