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
49 − 10 = ______
48 + 10 = ______
41 − 10 = ______
2 × 10 = ______
6 × 10 = ______
36 + 20 = ______
7 × 10 = ______
75 − 10 = ______
63 + 10 = ______
78 + 20 = ______
59 + 20 = ______
8 × 10 = ______
86 + 10 = ______
82 − 10 = ______
1 × 10 = ______
26 + 20 = ______
51 − 10 = ______
33 − 10 = ______
39 − 10 = ______
90 − 10 = ______
