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Question
Number Surprises
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Solution
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RELATED QUESTIONS
Circle the multiples of 9 (by using casting out nine).
9443
Circle the multiples of 9 (by using casting out nine).
1008
Circle the correct subtraction fact (by using casting out nine).
2362 – 632 = 1720
90, 180, 270, _______, ________, ________.
Complete the following sequence.
9 × 6 = 54
9 × 66 = 594
9 × 666 = 5994
9 × 6666 = 5 ______ 4
9 × 666666 = _____________
Complete the following sequence.
9 × 111 = 999
9 × 222 = 1998
9 × 333 = 2997
9 × 444 = ________
9 × 555 = ________
9 × 666 = ________
Now try doing it with some other number and also take a different number to add at each step.
What if someone gives you to add ten numbers together?
Did you notice some pattern in the answers?
Take the first two odd numbers. Now add them, see what you get. Now, at every step, add the next odd number.|
How far can you go on?
Look at this pattern of numbers and take it forward.
1 = 1 × 1
121 = 11 × 11
12321 = 111 × 111
1234321 = ?
