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Subtraction Brett builds 9 sandcastles on the seashore. 6 get washed away by waves. How many of Brett's sandcastles remain on the seashore? It's Halloween" Matt has 10 jack-o'-lanterns displayed on his front porch. He gives away 4 to Sasha. How many jack-o'-lanterns remain on Matt's porch? Billie has 4 jump ropes. 2 among them have adjustable ...
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