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
82 + 20 = ______
88 + 10 = ______
92 − 10 = ______
32 + 20 = ______
3 × 10 = ______
84 + 20 = ______
65 − 10 = ______
7 × 10 = ______
24 − 10 = ______
31 + 10 = ______
50 + 10 = ______
49 + 10 = ______
54 + 20 = ______
93 − 10 = ______
81 + 20 = ______
78 − 10 = ______
61 + 10 = ______
53 + 20 = ______
52 − 10 = ______
28 + 10 = ______
