Mathematics
Addition & Subtraction
Procedural
5–6 yrs
Number bonds
数字组合
Description
Recall number bonds (addition and related subtraction facts) within 20
Mastery Evidence
- Quickly recall that 8 + 5 = 13
- Given 13 – 5, respond 8 using knowledge of related addition fact
- Know all pairs of single-digit numbers that sum to numbers up to 20
Assessment Prompt
Can your child quickly recall facts like '8 + 7 = 15' and immediately know that '15 − 7 = 8' — without having to work out the subtraction from scratch?
