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
84 − 10 = ______
66 + 20 = ______
88 − 10 = ______
35 − 10 = ______
50 + 10 = ______
55 + 20 = ______
46 − 10 = ______
82 + 10 = ______
15 + 20 = ______
58 + 20 = ______
35 + 10 = ______
86 − 10 = ______
57 − 10 = ______
32 + 20 = ______
4 × 10 = ______
36 + 10 = ______
26 − 10 = ______
77 + 10 = ______
21 + 10 = ______
2 × 10 = ______
