4.1 Friendly Numbers

SRB 22

Division Vocabulary

Dividend – The number being divided.

Divisor – The number that is dividing the dividend.

Quotient – The answer of a division problem.

Remainder – The number left over when a dividend cannot be divided equally.

Quotient Remainder

Divisor Dividend

Friendly Numbers

Break down a division problem into easier numbers to work with.

Think: 10 times the divisor and subtract. This will give you your two friendly numbers.

Divide the friendly numbers by the divisor. Add the two friendly number quotients

together to get your quotient.

Example 1

75 divided by 5 equals________

50 and 25(friendly parts of 75)

10 + 5 = 15

75 divided by 5 equals_15_____

Example 2

87 divided by 6 equals________

60 and 27(friendly parts of 87)

10 + 4 r3 = 14 r3

87 divided by 6 equals_14 r3_____

Example 3

124 divided by 8 equals________

80 and 44(friendly parts of 124)

10 + 5 r4 = 15 r4

124 divided by 8 equals_15_r4____