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
77 + 20 = ______
18 + 10 = ______
76 + 10 = ______
58 − 10 = ______
41 + 10 = ______
29 + 20 = ______
35 − 10 = ______
61 + 10 = ______
42 + 20 = ______
9 × 10 = ______
4 × 10 = ______
15 + 20 = ______
8 × 10 = ______
96 − 10 = ______
65 − 10 = ______
16 + 10 = ______
40 + 10 = ______
6 × 10 = ______
78 − 10 = ______
82 + 10 = ______
