Open Middle®
Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to create a true statement.
Hint
Consider the relationship between skip counting, multiples, and factors.
Answer
GCF(32,48)=16, GCF(36,54)=18, GCF(38,57)=19, GCF(52,78)=26, GCF(54,81)=27, GCF(56,84)=28
GCF(28,70)=14, GCF(32,80)=16, GCF(34,85)=17, GCF(36,90)=18
GCF(36,48)=12, GCF(54,72)=18, GCF(63,84)=21
GCF(54,90)=18
GCF(36,84)=12
GCF(48,60)=12, GCF(56,70)=14, GCF(72,90)=18
GCF(56,98)=14
GCF(65,78)=13,
GCF(60,84)=12
GCF(84,96)=12
Source: Cecilia Calvo Pesce
GCF(18, 24) = 06
GCF: 63 and 84 = 21
There’s an error in the solution section:
GCF(52,78)=26 uses the digit 2 twice.
The rest is correct and there’s no solution missing.
20 ,45 =25
(18,12)=69
(18,12)=6
(36, 24)=8
#1 50 #2 25 GCF=5 tell me if im right this took me less than 30 seconds (the answer). im in an extended learning program
38 on top of 48
36 and 45 GCF: 9
67 and 53: 01
42 & 35; GCF = 07
14 & 36; GCF = 02