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
9 × 10 = ______
4 × 10 = ______
73 − 10 = ______
82 − 10 = ______
84 − 10 = ______
94 − 10 = ______
34 + 10 = ______
34 + 20 = ______
36 + 20 = ______
8 × 10 = ______
69 − 10 = ______
88 + 10 = ______
22 − 10 = ______
83 + 20 = ______
32 + 20 = ______
79 + 10 = ______
71 − 10 = ______
80 + 10 = ______
73 + 10 = ______
63 + 20 = ______
