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
20 + 10 = ______
16 + 20 = ______
16 + 10 = ______
8 × 10 = ______
61 − 10 = ______
33 − 10 = ______
53 + 10 = ______
41 + 20 = ______
72 + 10 = ______
34 − 10 = ______
69 + 10 = ______
9 × 10 = ______
75 − 10 = ______
18 + 20 = ______
58 + 10 = ______
60 + 10 = ______
68 − 10 = ______
65 + 20 = ______
75 + 20 = ______
96 − 10 = ______
