The home numeracy environment (HNE) is an essential factor to explain family engagement in relation to numeracy. Research in this field has mostly focused on English-speaking families and has not taken into consideration cultural differences that contextualize the home environment. Measuring HNE in more ethnically diverse samples might counter results that are biased from using a deficit perspective. Given the growth of the Latine population in the United States, there is a need to redefine family engagement in numeracy and update the HNE measures to increase their cultural relevance. This mixed methods study used a strengths-based framework to develop an HNE measure for Latine families. Fourteen Latine caregivers were interviewed (57% mothers) in the first study, and 216 Latine caregivers (63% mothers) participated in the second study, which examined the scale's factor structure. The validation process included parent reports of their child's numeracy skills (child M[subscript age] = 2.93 years, SD = 0.74). Three factors were identified (caregiver-child interactions, caregivers' math anxiety, and math beliefs). The first and third factors were significantly associated with parental reports of their child's numeracy skills.