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
14 + 20 = ______
37 − 10 = ______
68 + 20 = ______
6 × 10 = ______
65 + 10 = ______
7 × 10 = ______
35 − 10 = ______
51 + 10 = ______
77 − 10 = ______
5 × 10 = ______
4 × 10 = ______
87 − 10 = ______
38 + 10 = ______
56 + 20 = ______
78 + 10 = ______
54 + 10 = ______
28 − 10 = ______
85 + 10 = ______
55 + 20 = ______
71 − 10 = ______
