📘 Strengthen mental math fluency and estimation skills using fast-paced practice. 📌 **Topics Included:** • Approximating square roots mentally • Breaking apart numbers for division • Estimating decimal operations • Estimating differences • Estimating quotients • Estimating sums • Estimating with percents • Front end estimation • Halving and doubling strategy • Mental subtraction 1 digit • Mental subtraction 2 digit • Multiplying by 11 tricks • Rounding to the nearest hundred • Rounding to the