Math speed drills for 2nd and 3rd Graders

This book includes string calculations for addition and subtraction from 0 to 100. Here is one example: 95-(90-1)=? Is the answer 4? [95-90-1=4] or is it 6? The book also consists of multiplication and division to reinforce the multiplication table from 0 to 9. Here are two examples: 9 x 9=? , 72 ÷8=? The most challenging part of this book has problems like these: 9 x 8-70=? , (100-19) ÷ 9=? Remember your order of operations?