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
8 × 10 = ______
31 + 20 = ______
25 + 10 = ______
58 + 20 = ______
84 + 20 = ______
90 − 10 = ______
3 × 10 = ______
16 + 10 = ______
50 − 10 = ______
12 + 20 = ______
83 + 20 = ______
73 + 10 = ______
55 − 10 = ______
62 − 10 = ______
30 + 20 = ______
68 − 10 = ______
70 − 10 = ______
80 + 20 = ______
63 + 20 = ______
35 + 20 = ______
