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
67 + 10 = ______
53 + 20 = ______
85 + 20 = ______
3 × 10 = ______
79 − 10 = ______
8 × 10 = ______
14 + 20 = ______
86 + 20 = ______
71 + 20 = ______
35 + 20 = ______
68 − 10 = ______
45 − 10 = ______
58 + 20 = ______
83 + 10 = ______
7 × 10 = ______
23 + 10 = ______
67 − 10 = ______
47 − 10 = ______
21 − 10 = ______
39 + 10 = ______
