Fast & Fun Mental Math

Transcription

1 Fast & Fun Mental Math 250 Quick Quizzes to Sharpen Math Skills Every Day of the School Year By Chuck Lotta S C H O L A S T I C PROFESSIONAL BOOKS New York Toronto London Auckland Sydney Mexico City New Delhi Hong Kong

2 Dedication This book is dedicated to the teachers who have faithfully used its methods over the years. Kudos to the math teachers at Barrett Middle School in San Juan Unified School District, Sacramento, California, who recognized the need for it and suggested ideas. I also salute the hundreds of enthusiastic student teachers at Chapman University, Sacramento Campus, who continue to spread mental math skills wherever they teach. Chuck Lotta Teachers may photocopy the reproducibles in this book for classroom use. No other part of this publication may be reproduced in whole or in part, or stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopy, recording, or otherwise, without written permission of the publisher. For information regarding permission, write to Scholastic Inc., 555 Broadway, New York, NY Cover design by Jaime Lucero and Norma Ortiz Cover art by Alfred Schrier Interior design by Drew Hires Interior illustrations by Drew Hires ISBN: Copyright 2000 by Chuck Lotta. All rights reserved. Printed in the U.S.A.

3 Table of Contents Introduction... 5 How to Use This Book... 6 What Students Need to Know to Do Mental Math... 7 Mental Math Facts... 9 Specific Math Subjects by Weeks Quizzes Answer Sheets Answer Key... 76

4 Week 1 Questions MONDAY Write the Number 1. Write the number Write the number Write the number Write the number 9, Write the number 9, Write the number Write the number Write the number Write the number 5, Write the number 50, =? TUESDAY Numeration =? =? =? =? =? 6. 1, =? 7. 2, =? 8. 6, =? 9. 10, =? , , =? THURSDAY How Many? 1. How many hours in a day? 2. How many days in a year? 3. How many socks in a pair? 4. How many socks in 3 pairs? 5. How many nickels in a quarter? 6. How many dimes in a dollar? 7. How many dimes in a half-dollar? 8. How many pennies in a dollar? 9. How many pennies in a half-dollar? 10. How many quarters in a dollar? WEDNESDAY How Many? 1. How many sides on a triangle? 2. How many cents in a dollar? 3. How many dimes in a dollar? 4. How many quarters in a dollar? 5. How many sides on a square? 6. How many sides on a circle? 7. How many days in a week? 8. How many months in a year? 9. How many inches in a foot? 10. How many feet in a yard? FRIDAY More Than What number is 2 more than 35? 2. What number is 3 more than 41? 3. What number is 4 more than 15? 4. What number is 5 more than 19? 5. What number is 6 more than 25? 6. What number is 7 more than 35? 7. What number is 8 more than 42? 8. What number is 9 more than 51? 9. What number is 10 more than 90? 10. What number is 100 more than 9? 11

5 Week 2 Questions MONDAY 2 Times 1. 2 x 0 =? 2. 2 x 3 =? 3. 2 x 6 =? 4. 2 x 10 =? 5. 2 x 20 =? 6. 2 x 40 =? 7. 2 x 50 =? 8. 2 x 60 =? 9. 2 x 100 =? x 200 =? TUESDAY Addition Patterns =? =? =? =? =? 6. 5, ,000 =? =? =? =? 10. 9, ,000 =? WEDNESDAY How Many? 1. Add 50 cents and 20 cents. 2. Add 30 cents and 50 cents. 3. Subtract 50 cents from 80 cents. 4. Subtract 90 cents from 1 dollar. 5. Multiply 20 cents by Multiply 10 cents by Multiply 20 cents by Divide 50 cents by Divide 40 cents by Divide 1 dollar by 4. THURSDAY Fraction Problems 1. What is one-half of 10? 2. What is one-half of 20? 3. What is one-half of 100? 4. What is one-half of 1,000? 5. What is one-third of 30? 6. What is one-third of 300? 7. What is one-third of 3,000? 8. What is one-fourth of 400? 9. What is one-fourth of 4,000? 10. What is one-fourth of 40,000? FRIDAY Geometric Addition 1. One triangle has how many sides? 2. One square has how many sides? 3. One circle has how many sides? 4. 1 square + 1 triangle have how many sides in all? 5. 1 triangle + 1 circle have how many sides in all? 6. 3 triangles have how many sides in all? triangles have how many sides in all? 8. 5 squares have how many sides in all? circles have how many sides in all? triangles + 2 squares + 2 circles have how many sides in all? $ =? 12