Number Bonds to 10

Number bonds to 10 are the most important arithmetic facts for mental math. Automaticity here enables efficient calculation with larger numbers.

• Framework: Montessori
• Unit: Mathematics
• Learning area: Number Concepts
• Level: Ages 4-6

Objectives

• Master all pairs that make 10
• Build automaticity with bonds
• Develop mental arithmetic foundation

Materials

• Ten-frame
• Two-color counters
• Number bond recording cards
• Bead bars

Instructions

1. Place 10 counters on ten-frame. 2. Flip some to show other color. 3. '7 red and 3 blue. 7 + 3 = 10.' 4. Flip different amounts. Record each bond. 5. Find all eleven bonds (0+10 through 10+0). 6. Practice rapid recall: 'I say 6, you say...?' '4!'

Educator tip

Practice bonds daily for a few minutes. Songs, chants, and partner games make memorization fun.

Assessment

Child recalls all number bonds to 10 rapidly (within 3 seconds).

More from Mathematics

• Doubles and Near Doubles
• Making Ten Strategy
• Measuring Length with Non-Standard Units
• Measuring with Rulers
• Weighing and Comparing Mass
• Telling Time: Hours and Half Hours
• Calendar and Date Concepts
• Geometric Solids