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Tynnu/ Subtraction

Tynnu ar linell rhif Subtraction on a number line

Tynnu 1 wrth rhif hyd at 20 Taking 1 away from a number to 20

Tynnu 2 neu 3 wrth rhif hyd at 20 Taking 2 or 3 away from a number to 20

Lluosrif o 10 - 10 Multiple of 10 - 10

Lluosrif o 10 - Lluosrif o 10 Multiple of 10 - Multiple of 10

2 ddigid - 1 digid 2 digits - 1 digit

Adnabod y lluosrif nesaf o 10 Spotting the next multiple of 10

Adnabod y naid i'r lluosrif nesaf o 10 Knowing the gap to the next multiple of 10

Adnabod y naid dros lluosrif o 10 Knowing the total gap across a multiple of 10

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