The learner is expected to subtract mentally 1-digit numbers from 1 to 3- digit numbers without regrouping using appropriate strategies
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The learner is expected to subtract mentally 1-digit numbers from 1 to 3- digit numbers without regrouping using appropriate strategies
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Answer:
This is a learning outcome that describes the ability to perform mental subtraction of 1-digit numbers from 1 to 3-digit numbers without regrouping. Some strategies that may be helpful for solving these kinds of problems include:
Using place value understanding: Understand that the value of a digit depends on its place in the number. For example, in the number 356, the 3 is worth 300, the 5 is worth 50, and the 6 is worth 6.
Using estimation: Estimate the answer to the problem to check if it makes sense. This can help you to identify any mistakes you may have made.
Using the properties of operations: Remember that the order of operations does not matter when subtracting. You can subtract in any order you choose.
Using mental math strategies: Use mental math strategies such as rounding, compensation, and front-end estimation to make the problem easier to solve.
Practicing: Practice solving mental subtraction problems to improve your mental math skills and become more efficient at solving these kinds of problems.
Step-by-step explanation:
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