What is the main objective of learning subtraction cryptarithms?

• To solve puzzles using problem-solving strategies

• To learn new subtraction techniques

• To improve handwriting

• To memorize subtraction tables

What is the first step in solving a subtraction cryptarithm?

• Checking the answer

• Guessing the values of letters

• Looking at the operation

• Making an organized list

Why is it important to look at place values in cryptarithms?

• To identify the largest number

• To make quick generalizations

• To check for errors

• To find the smallest number

In practice example 1, what was the value of 'A'?

• 0

• 5

• 9

• 1

What strategy was used to find the value of 'C' in practice example 1?

• Using place value generalization

• Guessing

• Checking the answer

• Trial and error

In practice example 2, why was it necessary to make an organized list?

• To find the largest number

• To keep track of possible values for each letter

• To eliminate all possibilities

• To check for errors

What was the final value of 'D' in practice example 2?

• 8

• 6

• 9

• 5

Which strategy was emphasized as important in practice example 2?

• Speed

• Using a calculator

• Memorization

• Perseverance and guess-and-check

What is the benefit of having a plan and sticking to it when solving cryptarithms?

• It saves time

• It reduces frustration

• It guarantees the correct answer

• It makes the process faster

What should you do if your initial guesses do not work in a cryptarithm?

• Give up

• Try a different strategy

• Use a calculator

• Start over