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Grade 1 – Math
Addition and subtraction to 20; place value (tens and ones); measuring length; time.
Goals for this unit
- Add and subtract within 20; understand tens and ones.
- Compare lengths; tell time to the hour and half-hour.
Activity 1: Add and subtract
Solve: 7 + 5 = ___ 12 − 4 = ___ 9 + 8 = ___ 15 − 6 = ___
Activity 2: Tens and ones
How many tens and ones in 14? ___ tens ___ ones. Draw or write another number (10–20) and show tens and ones.
Activity 3: Length and time
Which is longer: your pencil or your eraser? How do you know? What time is it when the big hand is on 12 and the little hand is on 3?