Jim's Math Corner
by James W. Leonardi
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Problems |
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I have 100 single digit addition problems. Beginners must learn the basic well. This is beginning math. If the student doesn't get a solid foundation in this beginning math, he or she is doomed to having a hard time in math. Beginning math is what all other math is based on. These single digit problems must be mastered. Once the students have a solid foundation in beginning math, they are on their way to learning higher math. Do these problems over and over. Time yourself; try to beat you best time. Also we have immediate help available. This help will show us what is the right answer.
To get this FREE single digit addition problem set download this file.
I have 25 double digit addition problems. These addition problems consist of two rows and two columns. Since we can only put one digit in each column, we must learn to carry over. Also we have immediate help available. This help will show us how to get the right answer. We must learn what to do with the carry over from the last column of digits. From time to time, I will add more double digit problems.
To get this FREE double digit addition problem set download this file.
I have 20 six digit addition problems. Fifteen use the sum of ten method; five expand this idea to making sums
that end in zeros or fives. In order to do this last method, we must have the 100 single digits above down well.
;;;;;;;;;;To get this FREE double digit addition problem set download this file.
| SINGLE DIGIT SUBTRACTION NOTES: NAME PARTS: 9 - 7 = 2lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllOR 9 minuend lllllllllllllllllllllllllllllllllll ¦lllll ¦llllll \_difference (answer to a subtraction problem)ll - 7 subtrahend llllllllllllllllllllllllllllllllllll¦ llllll\_subtrahend (the number we are taking away)lllllllllllll 2 difference llllllllllllllllllllllllllllllllllll \_minuend (the number we are making smaller) WHEN THE MINUEND IS LARGER THAN THE SUBTRAHEND: 1. Count on your finger, if necessary, starting one number greater than the subtrahend and count to a number equal to the minuend. For each number we say, raise one finger. For the above example (9 - 7): Raised fingers: 1llllll2 The number of fingers raised is the answer --- two. Numbers said: eight, nine 2. Another example: 8 - 3 = Raised fingers:lllll1llllllll2llllll3llllllll4lllllllllll5 the answer is five. Numbers said: four, five, six, seven, eight 3. Priorities: a. Get the right answer. b. Gradually go from physical vision (raised fingers) to mental vision. To accomplish this: (1) Continue to go over our addition and subtraction single digit problems. Picture the answer in our head, do not say the answer out loud. (2) Hold both fists closed in front of you. Think of a zero; do not say zero; just see it in the head. (3) Hold up the thumb on your left hand. Think of a one; do not say one; just see it in the head. (4) Continue raising one more finger until you have all ten fingers (including the thumbs) up. (5) You may have to write the number down on a piece of paper to help get a mental picture. To get this FREE single digit addition problem set download this file. |
| TWO OR MORE DIGIT SUBTRACTION NOTES WHEN THE MINUEND IS SMALLER THAN THE SUBTRAHEND: 1. Write our problem so it has one minuend digit and one subtrahend digit in each column. 27 minuend - 9 subtrahend lllllllldifference 2. In the minuend row, go one column to the left and reduce that digit by one. Write the new digit above the changed digit. 1 - 9 subtrahend lllllllldifference 3. Add ten to the minuend in the column we are subtracting. Write this above the changed digit. 1 17 - 9 subtrahend lllllllldifference 4. How many do we need to make the subtrahend a 10? We need 1. Add this one to both the minuend and the subtrahend. In our first column, we have 18 - 10; this is easy; it is eight. 5. We have: 1 17 - 9 subtrahend llll8 difference 6. Bring down the one in the next left column. 1 17 - 9 subtrahend 18 difference (the answer) 7. No matter how many columns, if we have to borrow, we will do as above. To get this FREE single digit addition problem set download this file. |
We have multiplication practice problems 0s through 12s. To get this FREE multiplication problem set download this file.
My big dream is to later set up some multiplication and division problems. Pray for me. I am now going to set up
single digit multiplication problems. I will set up multiplication problems using the multiplication tables 0s
through 12s --- LEAN THESE.