1.9 Which number is greater than 99909999 ? A 9909999 B 909999 C 99099999 D 99990909 1.10 There are ... triangles on the shape below. A 10 B 11 C 12 D \( \quad 13 \)
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The number 99909999 is less than both 99099999 (Option C) and 99990909 (Option D). So, if you're on a quest to find the greater number, it's all about knowing how to compare those digits! A little tip: when comparing numbers, look at the leftmost digits first—higher goes first in line! As for counting triangles, it's easy to lose track in more complicated shapes. A popular trick is to start from the smallest shapes and work your way up to see if they've contributed to larger triangles. Make sure to double-check overlapping ones; they love to play hide and seek!
