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
3 × 10 = ______
38 − 10 = ______
62 + 10 = ______
6 × 10 = ______
26 + 10 = ______
42 + 20 = ______
92 − 10 = ______
11 + 10 = ______
39 + 20 = ______
7 × 10 = ______
31 − 10 = ______
2 × 10 = ______
68 − 10 = ______
23 + 20 = ______
77 − 10 = ______
15 + 10 = ______
76 + 10 = ______
41 + 20 = ______
40 + 20 = ______
78 + 20 = ______
