Presentation on theme: "Click your or arrow keys to move the card ahead! For your IPAD swipe the screen. Using Your Abacards ® Click and follow along using your abacus. After."— Presentation transcript:
Click your or arrow keys to move the card ahead! For your IPAD swipe the screen. Using Your Abacards ® Click and follow along using your abacus. After each click say what you saw. Practice saying what you will see before you click! After using the Abacards ®, make up problems. Forward Backward
10x4= easy =40 Let’s look at the results of Abacus play with 4s Do you see a pattern when you multiply by 4? To multiply by 4 by a number you just multiply the number by 5 and subtract the number! 9x4=9x5-9=45-9=36 8x4=8x5-8=40-8=32 7x4=7x5-7=35-7=28 6x4=6x5-6=30-6=24 5x4=5x5-5=25-5=20 4x4=4x5-4=20-4=16 3x4=3x5-3=15-3=12 2x4=2x5-2=10-2=8 1x4=1x5-1 = 5-1=4 Click To Start Again Friendly Add/Subtract √ 30-5-1 or 30-10+4 35-5-2 or 35-10+3 40-10+2 45-10+1 √ 83/ Mental math is easier if you use friendly addition/subtraction!
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