Foundation Mathematics Primary 1 Whole Numbers

Which number is the greatest: 9, 19, 91?

A 9
B 19
C 91
D they are all equal
Show Worked Solution

Worked Solution

Compare: 9 (0 tens 9 ones), 19 (1 ten), 91 (9 tens). 9 tens is the most, so 91 is greatest.

Correct answer: 91

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