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
23 + 20 = ______
46 − 10 = ______
61 + 10 = ______
92 − 10 = ______
87 − 10 = ______
8 × 10 = ______
65 + 20 = ______
2 × 10 = ______
72 − 10 = ______
73 + 10 = ______
40 + 10 = ______
59 + 20 = ______
36 + 20 = ______
7 × 10 = ______
11 + 10 = ______
79 − 10 = ______
85 + 20 = ______
89 − 10 = ______
6 × 10 = ______
14 + 20 = ______
