Which subtraction model-take-away, missing addend, comparison, or measurement-corresponds best to each problem below? (a) Kramer has a book of 10 pizza coupons. If he used 6 coupons to buy' pizza for Friday's party, how many coupons does he have left? (b) Tobias has saved \( \$ 35 \) toward the \( \$ 45 \mathrm{CD} \) player he wants to buy. How much money does he have to add to his savings to purchase the player? (a) Which subtraction model corresponds best to this problem? Take-away Measurement Which subtraction model corresponds best to this problem? Take-away Comparison
Solución de inteligencia artificial de Upstudy
Responder
Solución
¡Inicia sesión para desbloquear respuestas gratis!
Una plataforma de aprendizaje en la que confían millones de estudiantes y profesores reales.
Descubrir Respondido por UpStudy AI y revisado por un tutor profesional
The Deep Dive
In problem (a), we see Kramer starting with 10 pizza coupons and using 6, leaving him with 4. This is a classic take-away model where items are removed from a total, making it easy to visualize the subtraction as simply taking away what's been used! In problem (b), Tobias has a specific goal in mind—the cost of the CD player. He knows he needs $45 but only has $35, which prompts him to think: how much more does he need? This fits the missing addend model perfectly, as he is looking for the additional amount required to reach his target amount!
