10 task cards that are modeled after rounding and estimation questions from all previous STAAR tests.
TEKS 3.4B Round to the nearest 10 or 100 or use compatible numbers to estimate solutions to addition and subtraction problems.
TEKS 3.4G Use strategies and algorithms, including the standard algorithm, to multiply a two-digit number by a one-digit number. Strategies may include mental math, partial products, and the commutative, associative, and distributive properties.
TEKS 3.2B Describe the mathematical relationship found in the base 10 place value system through the 100,000's place.
TEKS 4.2 (A) Interpret the value of each place-value position as 10 times the position to the right and as one-tenth of the value