- p. 10Add and Subtract Within 1,000. Use any strategy, and show your thinking in the box below.
- p. 14Mixed Review. Read the sign on each problem first, then solve.
The standard
Fluently add and subtract within 1000 to solve problems.
Element 3.PAR.2.1 of Georgia's K-12 Mathematics Standards (2021, effective SY2023-24), in the Patterning & Algebraic Reasoning strand. It sits under standard 3.PAR.2: Use part-whole strategies to represent and solve real-life problems involving addition and subtraction with whole numbers up to 10,000.
What students practice
Fluency here means choosing a strategy, not racing a clock. In Add and Subtract to 10,000, one page of 3-digit problems lets students use any strategy and show their thinking, and Mixed Review items come back to it. Space Math Adventure covers 3-digit addition and subtraction with a regroup row, including regrouping across zeros, plus a two-step story page. Its within-100 warm-ups are labeled warm-ups and carry no code.
Where to find it
- p. 4Addition Launch Pad: 3-Digit. Same steps, one more column: add each place and use the shaded row to regroup.
- p. 6Subtraction Station: 3-Digit. Subtract and show regrouping in the shaded row, even across zeros.
- p. 12Word Problem Planets: Two Steps. Take it one step at a time: write both steps, then the answer and a label.
- p. 13Mission Control: Mixed Review. Read the sign word on each card first, then solve.
Think: 358 + 275 = 358 + 200 + 75 = 633.