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 = ______
18 + 10 = ______
24 + 20 = ______
32 − 10 = ______
14 + 20 = ______
81 − 10 = ______
58 + 20 = ______
26 − 10 = ______
52 + 10 = ______
4 × 10 = ______
67 + 10 = ______
3 × 10 = ______
82 − 10 = ______
34 + 20 = ______
86 + 10 = ______
5 × 10 = ______
12 + 20 = ______
63 − 10 = ______
71 − 10 = ______
47 + 20 = ______
