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
22 + 20 = ______
30 + 10 = ______
1 × 10 = ______
7 × 10 = ______
24 + 10 = ______
23 − 10 = ______
60 + 20 = ______
4 × 10 = ______
37 + 20 = ______
28 + 20 = ______
43 + 20 = ______
6 × 10 = ______
63 + 20 = ______
40 − 10 = ______
3 × 10 = ______
86 + 10 = ______
76 + 20 = ______
99 − 10 = ______
5 × 10 = ______
28 − 10 = ______
