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
25 − 10 = ______
13 + 20 = ______
81 − 10 = ______
40 + 10 = ______
85 + 10 = ______
54 + 10 = ______
77 − 10 = ______
65 − 10 = ______
74 − 10 = ______
7 × 10 = ______
9 × 10 = ______
64 − 10 = ______
78 + 20 = ______
4 × 10 = ______
82 − 10 = ______
73 + 20 = ______
1 × 10 = ______
22 − 10 = ______
33 + 20 = ______
90 − 10 = ______
