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
34 + 20 = ______
42 + 10 = ______
5 × 10 = ______
12 + 10 = ______
16 + 20 = ______
12 + 20 = ______
78 + 10 = ______
70 + 10 = ______
6 × 10 = ______
28 + 10 = ______
99 − 10 = ______
40 + 20 = ______
83 + 10 = ______
7 × 10 = ______
29 − 10 = ______
82 − 10 = ______
91 − 10 = ______
37 + 10 = ______
27 + 10 = ______
45 − 10 = ______
