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Inverse Cow Bonds 26-100

Teach number bonds to 100 and calculations with 'Number Bond Cows.' These ‘Inverse’ versions are great for teaching the relationship between addition and subtraction.

See 'More Details' for a working demo.

More details


These files are the same as the original cow bonds. This time when you click on the black patch, you see the inverse operation. Eg 1+99=100 turns in to 100-1=99. Crank the tail to make 100 – 99=1.



35 file with number bonds to 100  for numbers 26 to 50 and multiples of 5 from 55 to 100. Eg 26+74, 27+33, 55+45

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