Here are four sets of ocean themed task cards (12 cards in each set) that give your students plenty of practice with place value through hundred thousands. The first set has students writing numbers in standard form. The second set requires students to identify the place value of an underlined digit. For set three, students write numbers in expanded form. The fourth set has students writing number in word form. Recording sheets and answer keys are included for each set. These 48 task cards are great for math stations, to use as warm ups, to review before assessments, and to use as remediation.