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1.

Complete the following table:NumberDivide the number by 9.Is it completelydivisible?Sum of the digits inthe number.Is thesum divisibleby 9?1980✓1 + 9 + 8 + 0 = 18✓2999X2 + 9 + 9 + 9 = 29X500413389757869993

Answer»

Completed table:

NumberDivide the 
number by 9.
Is it completely
divisible?		Sum of the 
digits in
the number.		Is the
sum divisible
by 9?
1980✓1 + 9 + 8 + 0 = 18✓
2999X2 + 9 + 9 + 9 = 29X
5004✓5 + 0 + 0 + 4 = 9✓
13389X1 + 3 + 3 + 8 + 9 = 24X
7578✓7 + 5 + 7 + 8 = 27✓
69993✓6 + 9 + 9 + 9 + 3 =36✓
Discussion
2.

Complete the following table:NumberDivide the number by 4. Isit completelydivisible?The numberformed by thedigits in thetens and units places.Is this number divisible by 4?992✓92✓73146448811677733024

Answer»

Completed table:

NumberDivide the
 number by 4. Is
it completely
divisible?		The number
formed by the
digits in the
tens and units places.		Is this number 
divisible by 4?
992✓92✓
7314X14X
6448✓48✓
8116✓16✓
7773X73X
3024✓24✓
Discussion
3.

Complete the following table:NumberSum ofdigits inthe numberIs the sumdivisible by 3?Is the givennumber636 + 3 = 9✓✓87217XX9155293364527

Answer»

Completed table:

NumberSum of
digits in
the number		Is the sum
divisible by 3?		Is the given
number
636 + 3 = 9

✓

✓
8728 + 7 + 2 =17XX
919 + 1 = 10XX
5525 + 5 + 2 = 12✓✓
93369 + 3 + 3 + 6 = 21✓✓
45274 + 5 + 2 + 7 = 18✓✓
Discussion
4.

Read the numbers given below. Which of these numbers are divisible by 2, by 5, or by 10? Write them in the empty boxes.125,364,475,750,800,628,206,508,7009,5345,8710.Divisible by 2Divisible by 5Divisible by 10

Answer»
Divisible by 2Divisible by 5Divisible by 10
364,750, 800, 628,
206, 508, 8710		125,475, 750,
800, 5345, 8710		750, 800, 8710
Discussion