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
26 + 20 = ______
83 + 20 = ______
29 + 20 = ______
63 − 10 = ______
89 − 10 = ______
55 + 10 = ______
6 × 10 = ______
9 × 10 = ______
94 − 10 = ______
39 + 20 = ______
82 + 20 = ______
96 − 10 = ______
60 + 20 = ______
69 + 20 = ______
79 + 10 = ______
38 − 10 = ______
64 − 10 = ______
80 − 10 = ______
23 + 10 = ______
71 − 10 = ______
