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
31 + 20 = ______
77 + 20 = ______
5 × 10 = ______
96 − 10 = ______
9 × 10 = ______
88 − 10 = ______
42 − 10 = ______
81 + 10 = ______
38 + 20 = ______
11 + 10 = ______
7 × 10 = ______
2 × 10 = ______
39 + 20 = ______
63 + 20 = ______
93 − 10 = ______
55 + 10 = ______
77 + 10 = ______
45 + 20 = ______
45 − 10 = ______
83 + 10 = ______
