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
64 + 20 = ______
9 × 10 = ______
41 + 20 = ______
49 + 10 = ______
70 + 10 = ______
7 × 10 = ______
4 × 10 = ______
63 + 10 = ______
58 + 10 = ______
26 − 10 = ______
84 − 10 = ______
65 − 10 = ______
92 − 10 = ______
3 × 10 = ______
35 + 10 = ______
53 + 20 = ______
93 − 10 = ______
71 + 10 = ______
20 + 20 = ______
56 + 20 = ______
