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
98 − 10 = ______
41 − 10 = ______
8 × 10 = ______
82 + 10 = ______
41 + 20 = ______
73 + 20 = ______
1 × 10 = ______
76 − 10 = ______
65 − 10 = ______
89 + 10 = ______
50 − 10 = ______
80 + 10 = ______
50 + 10 = ______
39 − 10 = ______
85 + 20 = ______
14 + 10 = ______
36 + 20 = ______
45 + 20 = ______
84 + 10 = ______
51 − 10 = ______
