Across
- 1. _____________ methods focus on the leading or leftmost digits in numbers, ignoring the rest
- 5. _______ a variety of methods from the start helps students gain flexibility and enhances learning
- 6. the ____-factor approach is used when students estimate about how many times they can divide up a certain number and narrow their choices.
- 8. the _____ model is a visual representation that can support students' multiplication reasoning and understanding.
- 9. when students see patterns in multiplicative situations and generalize these patterns into rules , they are doing ______
- 12. __________ strategy is when the problem is changed to an easier one, then an adjustment or ________ is made.
- 14. ___________ strategy is when students reflect on base ten concepts (decades) to break down multiplication
- 15. ____refers to a number that is a suitable approximation for an exact number given a particular context
- 16. ______ problems encourages students to use facts and combinations they already know to figure out more complex computations
Down
- 2. tens, hundreds and ________ are friendly numbers for multiplication and division
- 3. _______ is not a mathematical term, but refers to a number that would make thew problem easier to solve
- 4. the ____ trade method and the use of place value columns will helps with the problem of leaving out a middle zero
- 7. ________ strategy involves truncation or covering up all digits other than the first.
- 10. models that represent numbers. For example, a model of 6 set of 34
- 11. written ______ in division is when students share, record, record and then trade (if necessary)
- 13. to multiply and divide using two digit numbers requires an understanding or _______