Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
21 + 10 = ______
37 − 10 = ______
1 × 10 = ______
6 × 10 = ______
79 + 10 = ______
46 + 20 = ______
27 + 20 = ______
42 − 10 = ______
69 − 10 = ______
84 + 10 = ______
27 + 10 = ______
5 × 10 = ______
8 × 10 = ______
3 × 10 = ______
80 + 20 = ______
73 + 20 = ______
7 × 10 = ______
28 − 10 = ______
70 − 10 = ______
9 × 10 = ______
