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
65 − 10 = ______
1 × 10 = ______
49 + 10 = ______
58 − 10 = ______
31 + 10 = ______
7 × 10 = ______
77 − 10 = ______
54 − 10 = ______
84 + 20 = ______
3 × 10 = ______
44 + 20 = ______
93 − 10 = ______
33 − 10 = ______
29 + 20 = ______
52 + 20 = ______
34 + 10 = ______
52 − 10 = ______
28 − 10 = ______
83 + 20 = ______
4 × 10 = ______
