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11 www.movingwithmath.com Manipulatives are the Universal Language that engage all senses. As students discover concepts, they build their understanding and confidence. CRA instruction has shown to improve achievement for ALL students, especially for EL, ESL, Tier 2 & 3 and Special Education. Scaffolded curriculum builds successful, confident math students. Ideal SoluƟon for Dual Language ALL assessments, student book pages, Skill Builders, and Family Math activities are available in English and Spanish for most programs. Subtracting Tens There are 10 hot dogs in a package. You have 5 packages of hot dogs. You sell 2 packages. How many packages of hot dogs do you have? How many hot dogs? You can draw a picture. ✗ ✗ 5 packages – 2 packages = _______ packages 50 – 20 = _______ hot dogs Use blocks to find the answer. First, build the larger number. Then, remove the smaller number and read the number left. TENS ONES TENS ONES 50 – 20 30 hot dogs left = 30 Use blocks. Find how many. 1. You have 7 packages of hot dogs. You sell 3 packages. How many hot dogs do you have left? _______ 2. You have 7 packages of hot dogs. Your friend has 9 packages. How many more packages does your friend have? _______ 3. 6 tens 60¢ – 2 tens – 20¢ 4 tens 40¢ 4 . 9 tens ¢ – 5 tens – ¢ 5. 40 90 80 70¢ 90¢ 80¢ – 20 – 50 – 40 – 20¢ – 30¢ – 50¢ ¢ ¢ ¢ 6. If 7 – 3 = 4, 70 – 30 = _______ If 8 – 5 = 3, 80 – 50 = _______ 7. If 9 – 4 = 5, 90 – 40 = _______ If 9 – 6 = 3, 90 – 60 = _______ 8. Describe the pattern for subtracting groups of ten. 90 50 Restar decenas Hay 10 perros calientes en un paquete. Tienes 5 paquetes de perros calientes. Vendes 2 paquetes. ¿Cuántos paquetes de perros calientes tienes? ¿Cuántos perros calientes hay? Puedes hacer un dibujo. 5 paquetes – 2 paquetes = _____ paquetes 50 – 20 = _____ perros calientes Usa bloques para hallar la respuesta. Primero, forma el número más grande. Luego, retira el número más pequeño y lee el número que queda. Decenas Unidades Decenas Unidades 50 – 20 quedan 30 perros calientes = 30 Usa bloques para saber cuántos hay. 1. Tienes 7 paquetes de perros calientes. Vendes 3 paquetes. ¿Cuántos perros calientes te quedan? _______ 2. Tienes 7 paquetes de perros calientes. Tu amigo tiene 9 paquetes. ¿Cuántos paquetes más tiene tu amigo? _______ 3. 6 decenas 60¢ – 2 decenas – 20¢ 4 decenas 40¢ 4 . 9 decenas ¢ – 5 decenas – ¢ 5. 40 90 The Universal Language of Manipulatives for ELs English Student Book Page Spanish Student Book Page