ENDLESS PRACTICE for addition and subtraction within 10,000! These 1000 TASK CARDS practice adding and subtracting up to 10,000. Task cards are great for a whole-class game, math centers/stations, fast finishers, extra practice, homework, scavenger hunt, quiz-quiz-trade, scoot, morning work, small groups, or review for test.What’s included?1000 task cards printed 4 to a page*A version with answers on the backs of the task cards*A version without answers on the backs of the task cardsAnswer keyFo