Question: 1. Accurate and efficient subtraction involves: Rote learning. Following a recipe. Building up understanding progressively. 2. Base ten blocks: Are useful to see the process

1. Accurate and efficient subtraction involves: Rote learning. Following a recipe. Building up understanding progressively. 2. Base ten blocks: Are useful to see the process of exchange. Too bulky and awkward to use in a classroom. Are only useful for addition problems. 3. Children find subtraction: Easier than addition. Difficult because subtraction is not logical. Difficult because children need to rely on their understanding of addition. 4. Flard cards: Develop children's understanding of place value. Should not be used in subtraction problems. Both A and B. + 10 XP

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