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
34 + 20 = ______
83 − 10 = ______
19 + 10 = ______
8 × 10 = ______
50 + 20 = ______
12 + 10 = ______
94 − 10 = ______
42 + 20 = ______
7 × 10 = ______
85 + 10 = ______
53 − 10 = ______
5 × 10 = ______
40 − 10 = ______
55 + 20 = ______
28 + 10 = ______
65 − 10 = ______
27 − 10 = ______
81 + 20 = ______
75 + 10 = ______
36 + 20 = ______
