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
2 × 10 = ______
35 + 20 = ______
78 − 10 = ______
5 × 10 = ______
82 + 20 = ______
75 − 10 = ______
51 + 10 = ______
87 − 10 = ______
12 + 10 = ______
68 + 10 = ______
64 + 10 = ______
79 + 20 = ______
66 − 10 = ______
39 + 10 = ______
81 − 10 = ______
85 + 20 = ______
4 × 10 = ______
68 − 10 = ______
88 + 20 = ______
28 + 10 = ______
