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
63 + 20 = ______
20 + 20 = ______
7 × 10 = ______
9 × 10 = ______
4 × 10 = ______
38 + 10 = ______
22 + 20 = ______
39 − 10 = ______
6 × 10 = ______
31 − 10 = ______
62 − 10 = ______
52 − 10 = ______
54 + 20 = ______
42 + 20 = ______
22 − 10 = ______
33 − 10 = ______
55 + 20 = ______
68 + 20 = ______
88 + 10 = ______
59 − 10 = ______
